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WAEC Economics 2011 Question 13

Question 13

Theory of Consumer Behaviour

When total utility is constant, it means marginal utility is

  1. A.increasing.
  2. B.zero.
  3. C.decreasing.
  4. D.one.
Show the answer and explanation

Answer: B (zero.)

Explanation

If total utility does not change, the extra unit adds nothing: MU = 0.