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Tuesday, 18 August 2026
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Economics Past Questions and Answers

Topic: Theory of Costs and Revenue

Jamb Economics Questions - Theory of Costs and Revenue

Question 106:
The diagram above represents the short-run position of a monopolist. The profit-maximizing output is
  • A Q<sub style='font-size: smaller;'>3</sub>
  • B Q<sub style='font-size: smaller;'>4</sub>
  • C Q<sub style='font-size: smaller;'>1</sub>
  • D Q<sub style='font-size: smaller;'>2</sub>
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Question 107:
The table above shows the combinations of beans and rice that can be purchased by a consumer. The opportunity cost of moving from K to L is
  • A 2 units of rice
  • B 5 units of beans
  • C 17 units of rice
  • D 20 units of beans
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Question 108:
For a firm to break even in the long run, the marginal cost curve must cut the
  • A Average variable cost curve at its higest point
  • B Average cost cure at its lowest point
  • C Average cost curve at its lowest point
  • D Total cost cure at its lowest point
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Question 109:
Applying the law of comparative costs, how many units of groundnuts will Nigeria produce?
  • A 7000 units
  • B 16000 units
  • C 9000 units
  • D 8000 units
View Answer & Explanation
Question 110:
Choice involves opportunity cost because
  • A Goods give different utilities
  • B Available resources are inadequate
  • C There are many goods to select from
  • D Not all goods have the same price
View Answer & Explanation