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JAMB Mathematics 2003 Question 8

Question 8

Ratio, Percentages and Rates

A cinema hall contains a certain number of people. If 22½% are children, 47½% are men and 84 are women, find the number of men in the hall.

  1. A.63
  2. B.84
  3. C.113
  4. D.133
Show the answer and explanation

Answer: D (133)

Explanation

Women are 100 − 22½ − 47½ = 30% of the hall, so the hall holds 84 ÷ 0.3 = 280 people. Men = 47½% of 280 = 133.