JAMB Economics 2005 Question 4

Question 4

Market Structures

Output(kg) | 240 | 450 | 580 | 630
MR(₦) | 75 | 48 | –40 | –22
MC(₦) | 41 | 48 | 77 | 20
Given the table above, what is the firm's short-run profit-maximizing output?

  1. A.450g
  2. B.630 kg
  3. C.240 kg
  4. D.580 kg
Show the answer and explanation

Answer: A (450g)

Explanation

Profit is greatest where marginal revenue equals marginal cost. MR = MC = ₦48 at an output of 450 kg.