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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 56:
If one orange costs 20k and one kilogram of beef costs N10.00, the opportunity cost of one kilogram of beef is?
  • A 50 oranges
  • B 10 oranges
  • C 5 oranges
  • D 9.80
View Answer & Explanation
Question 57:
If one orange costs 20k and one kilogram of beef costs N10.00, the opportunity cost of one kilogram of beef is?
  • A 50 oranges
  • B 10 oranges
  • C 5 oranges
  • D 9.80
View Answer & Explanation
Question 58:
At the point of profit maximization by a firm, marginal cost is?
  • A Minimum
  • B Falling
  • C Constant
  • D Rising
View Answer & Explanation
Question 59:
Technical progress that leads to a reduction in costs results in?
  • A An increase in equilibrium price and quantity
  • B A decrease in equilibrium price and quantity
  • C An increase in equilibrium price and decrease in equilibrium quantity
  • D A decrease in equilibrium price and increase in equilibrium quantity
View Answer & Explanation
Question 60:
Which of the following is applicable to a monopolistic firm operating at the output where marginal cost equals marginal revenue?
  • A Cost of production is at a medium
  • B The plant is of optimum size
  • C Price is above marginal revenue
  • D Average variable cost is at a minimum
View Answer & Explanation