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Economics Past Questions and Answers

Topic: The concepts of cost

Jamb Economics Questions - The concepts of cost

Question 86:
The long-run average cost curve touches to the short-run average cost curves at the
  • A Minimum points of all short run average cost curves
  • B Declining points of all short-run average cost curves
  • C Minimum point of only one of the short-run cost curves
  • D Rising points of all short-run average cost curves
View Answer & Explanation
Question 87:
In Nigeria, government can reduce the cost of accommodation by fixing rent
  • A At the prevailing rate
  • B At the equilibrium price
  • C Above the equilibrium price
  • D Below the equilibrium price
View Answer & Explanation
Question 88:
Use the table below to answer the question below;
The international production set for Nigeria and Austria is;
Products Nigeria Austria
Cocoa 20 tonnes 12 tonnes
Lace 1o metres 8 metres




The Opportunity cost ratio for cocoa and lace Tor Austria and Nigeria is ____________
  • A 1.5:2
  • B 2:2
  • C 2:1.5
  • D 0.5:1.5
View Answer & Explanation
Question 89:
Pricing and Output decisions of sellers are highly inter-dependent in markets known as ____________
  • A Monopoly
  • B Oligopoly
  • C Monopolistic competition
  • D Perfect competition
View Answer & Explanation
Question 90:
A firm's average cost decreases in the long-run because of
  • A Increasing returns to scale
  • B Diminishing average returns
  • C Decreasing marginal returns
  • D Decreasing average fixed cost
View Answer & Explanation