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WAEC Economics 1997 Question 16

Question 16

Theory of Demand

If the price of product K declines, the demand curve for the complementary product J will

  1. A.remain unchanged
  2. B.shift to the right
  3. C.decrease
  4. D.shift to the left
  5. E.slope upwards
Show the answer and explanation

Answer: B (shift to the right)

Explanation

Cheaper K means more K is bought, so more of its complement J is demanded at every price: J's demand curve shifts right.