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JAMB Mathematics 2010 Question 6

Question 6

Ratio, Percentages and Rates

If p:q = 2/3 : 5/6 and q : r = 3/4 : 1/2, find p:q:r.

  1. A.9:10:15
  2. B.12:15:16
  3. C.12:15:10
  4. D.10:15:24
Show the answer and explanation

Answer: C (12:15:10)

Explanation

p : q = 4 : 5 = 12 : 15 and q : r = 3 : 2 = 15 : 10. So p : q : r = 12 : 15 : 10.