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WAEC Economics 2016 Objective — Question 13

Question 13 of 50 from the West African Examinations Council (WAEC) Economics 2016 Objective paper, with the correct answer and a full explanation.

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13. The supply of rice in tons is given by the function Qs - 80 - 0.7P = 0 Where Qs = quantity supplied P = price in Dollars ($) Find Qs, when P = $40 (a) 108 tons (b) 52 tons (c) -52 tons (d) -108 tons

  • A. 108 tonsCorrect
  • B. 52 tons
  • C. -52 tons
  • D. -108 tons

Explanation

Qs = 80 + 0.7P; when P=40, Qs = 80 + 0.7(40) = 80 + 28 = 108 tons.

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