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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 71:
In the theory of production and cost, the average total cost of a firm is minimized when the marginal cost curve cuts the average total cost curve at its?
  • A Lowest point
  • B Middle point
  • C Maximum point
  • D Downward slopping section
View Answer & Explanation
Question 72:
Determine the marginal revenue if the total revenue is 80.00
  • A 6.00
  • B 12.00
  • C 14.00
  • D 18.00
View Answer & Explanation
Question 73:
Opportunity cost is an economic concept which describes the?
  • A Monetary equivalent of the utility of a commodity
  • B Amount of time or money invested on a commodity
  • C Sacrifice made for the satisfaction of a want
  • D Cost of retaining an optimum level of production of commodities
View Answer & Explanation
Question 74:
\(\begin{array}{c|c}
\text{Price N} & \text{Quantity sold} \\
5 & 15 \\
5 & 16 \\
5 & 17 \\
5 & 18 \\
\end{array}\)
Marginal revenue is
  • A N5
  • B N6
  • C N8
  • D N10
View Answer & Explanation
Question 75:
The opportunity cost of the use of productive resources which a producer owns and so does not pay constitutes?
  • A A fixed cost
  • B An implicit cost
  • C A variable cost
  • D A prime cost
View Answer & Explanation