JAMB Economics 1986 past questions and answers

50 questions. Try each one, then open the answer to check yourself and read the explanation.

Question 1

Basic Concepts

Choice in economic life is necessitated by

  1. A.the need to construct scale of preference
  2. B.the opportunity cost of consumption
  3. C.unlimited wants
  4. D.scarcity of economic resources
Show the answer and explanation

Answer: D (scarcity of economic resources)

Explanation

We have to choose because resources are scarce compared with our wants. If resources were unlimited, no choice would be needed.

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Question 2

Basic Concepts

Which of these is the real cost of satisfying any want in the sense of the alternative that has to be foregone?

  1. A.Variable cost
  2. B.Opportunity cost
  3. C.Total cost
  4. D.Prime cost
Show the answer and explanation

Answer: B (Opportunity cost)

Explanation

Opportunity cost is the next best alternative given up when a choice is made, so it is the real cost of satisfying a want.

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Question 3

Economic Systems

Under normal circumstances the concept of consumer sovereignty implies that

  1. A.the consumer and not the producer owns the means of production
  2. B.the producer and not the consumer determines what is to be produced
  3. C.the consumer and not the producer determines what is to be produced
  4. D.both the consumer and the producer determine what is to be produced.
Show the answer and explanation

Answer: C (the consumer and not the producer determines what is to be produced)

Explanation

Consumer sovereignty means consumers, through what they choose to buy, decide what producers make.

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Question 4

Theory of Production

A firm is at its optimum size when

  1. A.it produces the greatest output at the minimum cost
  2. B.it has a motive to increase output
  3. C.marginal cost equals marginal revenue
  4. D.marginal cost is less than marginal revenue
Show the answer and explanation

Answer: A (it produces the greatest output at the minimum cost)

Explanation

The optimum size of a firm is the size at which its average cost of production is lowest, so it gets the most output at the least cost per unit.

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Question 5

Theory of Production

The degree of specialization is limited by the

  1. A.availability of specialized skills and machinery
  2. B.marginal cost exceeding marginal revenue
  3. C.extent of the market
  4. D.disadvantage of standardization
Show the answer and explanation

Answer: C (extent of the market)

Explanation

Division of labour only pays if there is enough demand for the large output it creates, so it is limited by the size (extent) of the market.

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Question 6

Theory of Production

Production in Economics can be defined as the

  1. A.totality of producing, buying and consuming
  2. B.transformation of raw materials and services in order to provide ultimate utility
  3. C.transformation of raw materials and services in order to make maximum profit
  4. D.production of goods and services for consumption.
Show the answer and explanation

Answer: D (production of goods and services for consumption.)

Explanation

In economics, production means creating goods and services that satisfy human wants, that is, for consumption.

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Question 7

Theory of Production

A firm achieves least cost in production by substituting factors until

  1. A.their factor prices are equal
  2. B.their marginal-physical products are each equal to their factor prices
  3. C.their marginal-physical-products are each zero
  4. D.the ratio of their marginal-physical-products equals the ratio of their prices.
Show the answer and explanation

Answer: D (the ratio of their marginal-physical-products equals the ratio of their prices.)

Explanation

Cost is lowest when the last naira spent on each factor brings the same extra output, i.e. MP of A ÷ MP of B = price of A ÷ price of B.

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Question 8

Labour Market

If a person receives a higher wage than would be necessary to induce him to work, he is said to be receiving

  1. A.rent
  2. B.profit
  3. C.interest
  4. D.surtax income
Show the answer and explanation

Answer: A (rent)

Explanation

The extra amount a worker earns above what would just keep him in the job is economic rent.

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Question 9

Labour Market

Mobility of labour is NOT affected by

  1. A.optimum size of population
  2. B.marriage and family
  3. C.regulation of trade unions
  4. D.period of training.
Show the answer and explanation

Answer: A (optimum size of population)

Explanation

Family ties, union rules and long training all make it harder for workers to move between jobs or places; the optimum population size has nothing to do with it.

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Question 10

Population

A country has a population distribution as shown below:
Age Group in Years | Corresponding Percentage
Above 60 | 22
15 - 60 | 60
0 - 14 | 15
The dependency ratio is

  1. A.3 : 2
  2. B.1 : 3
  3. C.2 : 3
  4. D.1 : 5
Show the answer and explanation

Answer: C (2 : 3)

Explanation

Dependants are the under-15s and over-60s: 15 + 22 = 37%. Workers are 60%. 37 : 60 is roughly 40 : 60 = 2 : 3.

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Question 11

Population

Population density refers to

  1. A.densely populated urban centres
  2. B.the total area divided by the total population
  3. C.densely populated rural areas
  4. D.the total population divided by the total area
Show the answer and explanation

Answer: D (the total population divided by the total area)

Explanation

Population density is the number of people per unit of land: total population ÷ total land area.

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Question 12

Theory of Demand

What fundamentally determines how much a consumer spends in a producer's shop?

  1. A.Individual's propensity to consume
  2. B.Level of his taxation
  3. C.Level of his income
  4. D.Individual's taste or fashion.
Show the answer and explanation

Answer: C (Level of his income)

Explanation

How much a consumer can spend depends first of all on his income; the other factors work within that limit.

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Question 13

Economic Systems

Which of the following statements describes a mixed economy?

  1. A.The government and the private sector interact in solving the basic economic problems
  2. B.The invisible hand solves the basic economic problems
  3. C.The government produces and distributes all goods and services
  4. D.Society answers the 'what', 'how', and 'for whom' questions only through the market system.
Show the answer and explanation

Answer: A (The government and the private sector interact in solving the basic economic problems)

Explanation

In a mixed economy both the government and private individuals take part in deciding what, how and for whom to produce.

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Question 14

Theory of Demand

In drawing an individual's demand curve for a commodity, which of the following is NOT kept constant? The

  1. A.individual's money income
  2. B.price of substitutes
  3. C.price of complementary goods
  4. D.price of the commodity under consideration.
Show the answer and explanation

Answer: D (price of the commodity under consideration.)

Explanation

A demand curve shows how quantity demanded changes as the good's own price changes, while income and the prices of other goods are held constant.

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Question 15

Theory of Demand

Given that beef and fish are substitutes, a rise in the price of beef relative to that of fish will

  1. A.induce greater demand for beef
  2. B.induce greater demand for fish
  3. C.induce lower demand for fish
  4. D.equate demands for beef and fish.
Show the answer and explanation

Answer: B (induce greater demand for fish)

Explanation

When beef becomes dearer, people switch to its substitute, so demand for fish rises.

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Question 16

Price Determination

The main function of price mechanism is to

  1. A.limit consumer demand
  2. B.enable producers make profits
  3. C.allocate scarce resources among competing ends
  4. D.ensure consumer sovereignty.
Show the answer and explanation

Answer: C (allocate scarce resources among competing ends)

Explanation

Through changes in prices, the market decides which uses scarce resources go to; this allocation is the main job of the price mechanism.

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Question 17

Elasticity

Use the table below to answer this question.
Market Demand Schedule for Commodity X.
Price (₦) | Quantity (million units)
60 | 100
50 | 140
40 | 220
30 | 260
20 | 300
10 | 340
If the price of commodity X falls from ₦40.00 to ₦30.00 what is the price elasticity of demand?

  1. A.0.62
  2. B.0.73
  3. C.1.00
  4. D.1.50
Show the answer and explanation

Answer: B (0.73)

Explanation

Quantity rises from 220 to 260, a 40/220 = 18.2% change. Price falls by 10/40 = 25%. Elasticity = 18.2 ÷ 25 ≈ 0.73.

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Question 18

Elasticity

Use the table below to answer this question.
Market Demand Schedule for Commodity X.
Price (₦) | Quantity (million units)
60 | 100
50 | 140
40 | 220
30 | 260
20 | 300
10 | 340
The revenue accruing to the seller of commodity X as a result of a fall in price will

  1. A.increase
  2. B.fall
  3. C.first fall but will increase later
  4. D.remain unchanged.
Show the answer and explanation

Answer: B (fall)

Explanation

At ₦40 revenue is 40 × 220 = ₦8,800 million; at ₦30 it is 30 × 260 = ₦7,800 million. Demand is inelastic here, so revenue falls.

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Question 19

Economic Systems

Which of the following is an important function of prices in a market economy?

  1. A.Ensuring that resources are used in the most efficient manner
  2. B.Ensuring an equitable distribution of goods and services
  3. C.Ensuring that all industries are perfectly competitive in the long run
  4. D.Equating level of purchases with level of needs.
Show the answer and explanation

Answer: A (Ensuring that resources are used in the most efficient manner)

Explanation

Prices signal where resources are most valued, so in a market economy they guide resources to be used efficiently. Prices do not ensure fairness or meet needs people cannot pay for.

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Question 20

Market Structures

One major difference between monopoly and perfect competition is that

  1. A.the perfect competitor is a price taker while the monopolist determines his own output
  2. B.homogeneity of purpose exists for the perfect competitor while non-homogeneity of purpose exists for the monopolist
  3. C.sellers are located all over the world in the case of perfect competition but sellers are located only in one country monopolist
  4. D.there is free entry and exit in perfect competition but no free exit in monopoly
Show the answer and explanation

Answer: A (the perfect competitor is a price taker while the monopolist determines his own output)

Explanation

A perfectly competitive firm must accept the market price, while a monopolist, as the only seller, can set its own output (and so its price).

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Question 21

Theory of Costs and Revenue

A producer sustains a loss in the short run if

  1. A.marginal revenue is less than price
  2. B.price is less than average cost
  3. C.average variable cost is less than average cost
  4. D.marginal cost is less than marginal revenue.
Show the answer and explanation

Answer: B (price is less than average cost)

Explanation

Profit per unit is price minus average cost; if price is below average cost, the firm makes a loss.

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Question 22

Market Structures

A monopolist will practise price discrimination in two markets if

  1. A.the cost of separating the markets is large
  2. B.the markets have different elasticities of demand
  3. C.there is free flow of information in the two markets
  4. D.there is a patent of the commodity.
Show the answer and explanation

Answer: B (the markets have different elasticities of demand)

Explanation

Price discrimination pays only when buyers in the separate markets respond differently to price, i.e. their elasticities of demand differ.

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Question 23

Distributive Trade

In the normal channels of distribution the breaking of bulk is performed by the

  1. A.producer
  2. B.wholesaler
  3. C.retailer
  4. D.consumer.
Show the answer and explanation

Answer: B (wholesaler)

Explanation

The wholesaler buys in large quantities from producers and sells in smaller lots to retailers; this is breaking bulk.

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Question 24

Business Organisations

The most important advantage of co-operative societies is

  1. A.their high degree of democracy
  2. B.the increase in the cost of marketing
  3. C.that members are encouraged to save money
  4. D.the possibility of raising loans for the members.
Show the answer and explanation

Answer: D (the possibility of raising loans for the members.)

Explanation

Co-operatives pool members' savings so that members can get loans cheaply, which they could not easily get on their own.

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Question 25

Business Organisations

In a public company, shares are

  1. A.sold to one person only
  2. B.distributed freely
  3. C.advertised to members of the public for subscription
  4. D.disposed of by the Chief Executive.
Show the answer and explanation

Answer: C (advertised to members of the public for subscription)

Explanation

A public limited company offers its shares to the general public, usually through a prospectus and the stock exchange.

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Question 26

Business Organisations

Which of the following is a characteristic of private limited liability company?

  1. A.Its shares can be sold to the public.
  2. B.The number of shareholders ranges from fifty to one hundred
  3. C.All shareholders have equal powers and responsibilities
  4. D.The number of shareholders ranges from two to fifty.
Show the answer and explanation

Answer: D (The number of shareholders ranges from two to fifty.)

Explanation

Under the company law of that time, a private limited company had between two and fifty members and could not sell shares to the public.

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Question 27

Business Organisations

One of the advantages of a partnership over a sole proprietorship is that

  1. A.it is the most popular form of business organization
  2. B.the partner can easily withdraw from the business
  3. C.it makes an increase in the capital of the business possible
  4. D.there is no limit to the number of people who may bring in capital.
Show the answer and explanation

Answer: C (it makes an increase in the capital of the business possible)

Explanation

Several partners can each contribute money, so a partnership can raise more capital than one owner alone.

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Question 28

Industrialisation

Which of the following is an external economy derived by a firm?

  1. A.Low cost opportunities enjoyed by being in a place where other producers concentrate
  2. B.Technical economies enjoyed by varying the factors of production
  3. C.Economies of management by putting administrators where they are most efficient
  4. D.Marketing advantages attained through preferential treatment in the purchase and distribution of produce.
Show the answer and explanation

Answer: A (Low cost opportunities enjoyed by being in a place where other producers concentrate)

Explanation

External economies come from outside the firm, such as the benefits of being located near other firms in the same industry. The others are internal economies.

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Question 29

Industrialisation

Which of the following advantages of localization of industries may also be a disadvantage?

  1. A.External economies
  2. B.Concentration of industries and of people
  3. C.Development of organized markets
  4. D.Reduced costs of research.
Show the answer and explanation

Answer: B (Concentration of industries and of people)

Explanation

Bringing firms and people together helps production, but it also causes congestion, pollution, housing problems and heavy dependence on one industry.

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Question 30

Financial Institutions

The Nigerian Bank for Commerce and Industry is

  1. A.a commercial bank
  2. B.a development bank
  3. C.an industrial bank
  4. D.a merchant bank.
Show the answer and explanation

Answer: B (a development bank)

Explanation

The NBCI was a government development bank set up to give medium- and long-term finance to indigenous businesses.

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Question 31

Money and Inflation

To control inflation, the monetary authorities of a country can

  1. A.reduce taxes
  2. B.advise government to increase its expenditure
  3. C.engage in expansive monetary policy
  4. D.engage in restrictive monetary policy.
Show the answer and explanation

Answer: D (engage in restrictive monetary policy.)

Explanation

Inflation is fought by reducing the money supply and credit, which is a restrictive (tight) monetary policy.

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Question 32

Financial Institutions

Which of the following is used by the Central Bank to control the rate of interest?

  1. A.Bill of Exchange
  2. B.Banker's order
  3. C.Fixed deposit account
  4. D.Open market operation
Show the answer and explanation

Answer: D (Open market operation)

Explanation

By buying or selling government securities (open market operations), the Central Bank changes the money supply and so moves interest rates.

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Question 33

Money and Inflation

Graham's law in Economics shows that

  1. A.bad money drives good money out of circulation
  2. B.good money drives bad money out of circulation
  3. C.gold must be available to maintain the value of paper money
  4. D.the price level varies directly with the quantity of money.
Show the answer and explanation

Answer: A (bad money drives good money out of circulation)

Explanation

Gresham's law (printed here as Graham's) says people hoard good money and spend bad money, so bad money drives good money out of circulation.

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Question 34

Financial Institutions

Given that the cash reserve ratio is 10 per cent, what is the maximum amount of money that the banking system can create from an initial cash deposit of ₦1,000.00?

  1. A.₦100.00
  2. B.₦1,000.00
  3. C.₦9,000.00
  4. D.₦10,000.00.
Show the answer and explanation

Answer: D (₦10,000.00.)

Explanation

The credit multiplier is 1 ÷ reserve ratio = 1 ÷ 0.10 = 10, so total deposits can grow to 10 × ₦1,000 = ₦10,000.

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Question 35

Financial Institutions

The most important economic characteristic differentiating commercial banks from other financial institutions is their

  1. A.function as a safe and profitable store place for savings
  2. B.role in financing balance of payments deficits
  3. C.status as an intermediary between savers and borrowers
  4. D.ability to create and destroy money.
Show the answer and explanation

Answer: D (ability to create and destroy money.)

Explanation

Other financial institutions also link savers and borrowers, but only commercial banks create money: their loans become new deposits.

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Question 36

Money and Inflation

Deflation is a persistent fall in the general price level and is usually caused by

  1. A.a reduction in total demand
  2. B.an increase in government spending
  3. C.an increase in the money supply
  4. D.an increase in aggregate demand.
Show the answer and explanation

Answer: A (a reduction in total demand)

Explanation

When total spending in the economy falls, firms cut prices to sell their goods, causing deflation. The other options raise demand and prices.

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Question 37

Money and Inflation

Which of the following causes of inflation is related to demand-pull inflation?

  1. A.Low productivity on farms and in firms
  2. B.Poor storage facilities
  3. C.Poor distribution system
  4. D.Increase in government expenditure on construction.
Show the answer and explanation

Answer: D (Increase in government expenditure on construction.)

Explanation

Demand-pull inflation happens when total spending rises faster than output. Extra government spending raises demand; the other options reduce supply.

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Question 38

Public Finance

Which of the following is NOT a goal of modern budgets?

  1. A.The control on inflation
  2. B.The reduction in income inequality
  3. C.The shift of all resources from the private to the public sector
  4. D.Economic development.
Show the answer and explanation

Answer: C (The shift of all resources from the private to the public sector)

Explanation

Budgets aim at price stability, fairer income distribution and growth; moving all resources to the government is not a budget goal.

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Question 39

Public Finance

The best technical description of a progressive tax is a

  1. A.tax which takes more money from the rich than from the poor
  2. B.more equitable tax than a regressive one
  3. C.tax which takes a higher proportion of extra naira received as income rises
  4. D.tax which falls directly on those in the high income brackets.
Show the answer and explanation

Answer: C (tax which takes a higher proportion of extra naira received as income rises)

Explanation

With a progressive tax the rate rises as income rises, so a larger share of each extra naira is taken at higher incomes.

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Question 40

Public Finance

Tax incidence is the analysis of

  1. A.how progressive a tax is
  2. B.how a tax is collected
  3. C.how distorting a tax is
  4. D.who ultimately pays the tax.
Show the answer and explanation

Answer: D (who ultimately pays the tax.)

Explanation

Incidence of a tax is about who finally bears the burden of the tax, which may differ from who hands it to the government.

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Question 41

International Trade

In international trade, a country specializes in the production of a commodity or group of commodities for which it has

  1. A.a buoyant market
  2. B.plenty of raw materials
  3. C.the greatest relative advantage
  4. D.executive manpower.
Show the answer and explanation

Answer: C (the greatest relative advantage)

Explanation

By the law of comparative advantage, a country should specialise in what it produces at the lowest relative (opportunity) cost.

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Question 42

Balance of Payments and Exchange Rates

Balance of payments deficit in Nigeria CANNOT be solved by

  1. A.importing more goods and services
  2. B.devaluation of the currency
  3. C.imposing import duties
  4. D.imposing import bans on some commodities.
Show the answer and explanation

Answer: A (importing more goods and services)

Explanation

A deficit means more is paid out than received; importing more increases payments and makes the deficit worse.

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Question 43

Balance of Payments and Exchange Rates

The term balance of trade, can be defined as the

  1. A.relation between value of exports and value of imports over a given period of time
  2. B.balance owed to the rest of the world in payment for imports
  3. C.price paid for imports in terms of exports
  4. D.relation between payments of all kinds made by a country to the rest of the world, over a given period of time.
Show the answer and explanation

Answer: A (relation between value of exports and value of imports over a given period of time)

Explanation

Balance of trade compares the value of a country's visible exports with its visible imports over a period.

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Question 44

International Trade

The terms of trade is often measured by the ratio of the index of export prices

  1. A.divided by the index of import prices multiplied by 100
  2. B.multiplied by the index of import prices
  3. C.plus the index of import prices multiplied by 100
  4. D.minus the index of import prices.
Show the answer and explanation

Answer: A (divided by the index of import prices multiplied by 100)

Explanation

Terms of trade = (index of export prices ÷ index of import prices) × 100.

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Question 45

Economic Growth and Development

A society which forgoes present consumption

  1. A.is forced to do so because of excessive consumption within the country in the past
  2. B.is devoting new resources to new capital formation
  3. C.is merely devoting resources to the replacement of capital
  4. D.expects to consume only that amount tomorrow which was forgone today.
Show the answer and explanation

Answer: B (is devoting new resources to new capital formation)

Explanation

Resources not used for consumption today can be used to build new capital goods, which raise future output.

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Question 46

International Economic Organisations

ECOWAS will enable the countries involved to achieve

  1. A.comparative political advantage over other countries not in the region
  2. B.a large market for their products
  3. C.military superiority over countries not in the region
  4. D.lower the transportation cost of goods within the region.
Show the answer and explanation

Answer: B (a large market for their products)

Explanation

ECOWAS removes trade barriers among member states, giving their producers a much bigger market.

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Question 47

Economic Growth and Development

Which of the following methods is most likely to lead to an increased rate of growth in the national economy?

  1. A.An increase in wages and profits
  2. B.An increase in consumer demand
  3. C.A greater fraction of the National Product going into investment
  4. D.A continuous rise in bank loans.
Show the answer and explanation

Answer: C (A greater fraction of the National Product going into investment)

Explanation

Investing more of national output adds to the stock of capital, which raises the economy's capacity to produce and so its growth rate.

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Question 48

National Income

The difference between the Gross Domestic Product and the Gross National Product is

  1. A.allowance for total depreciation
  2. B.total interest payments
  3. C.total tax and interest payments
  4. D.net income from abroad
Show the answer and explanation

Answer: D (net income from abroad)

Explanation

GNP = GDP + net income from abroad, so the two differ by net factor income from abroad.

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Question 49

Economic Growth and Development

Which of the following strategies will provide more employment opportunities for Nigerians?

  1. A.Investment in social services
  2. B.Industrialization
  3. C.Economic planning
  4. D.Eradication of illiteracy.
Show the answer and explanation

Answer: B (Industrialization)

Explanation

Building industries creates factories and related businesses that directly employ many workers.

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Question 50

National Income

A nation's distribution of income shows

  1. A.the value of all goods produced in the economy
  2. B.how income is divided among different groups
  3. C.where the economy system is on its production possibility curve
  4. D.the consumption behaviour of the people.
Show the answer and explanation

Answer: B (how income is divided among different groups)

Explanation

Income distribution describes how the national income is shared among groups such as households, regions or factors of production.

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