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JAMB Economics 2008 Question 8

Question 8

Theory of Supply

If 100 units and 120 units of commodity X are supplied at ₦80 at different times, it means that there is

  1. A.a change in supply
  2. B.a change in the quantity supplied
  3. C.an increase in the quantity supplied
  4. D.a decrease in the quantity supplied
Show the answer and explanation

Answer: A (a change in supply)

Explanation

The price stayed at ₦80 but the quantity offered changed, so something other than price shifted the supply curve; that is a change in supply.