JAMB Mathematics 2010 Objective — Question 6

Question 6 of 50 from the Joint Admissions and Matriculation Board (JAMB) Mathematics 2010 Objective paper, with the correct answer and a full explanation.

6. If p:q = 2/3 : 5/6 and q:r = 3/4 : 1/2, find p:q:r. A. 10:15:24 B. 9:10:15 C. 12:15:10 D. 12:15:16

A. 10:15:24
B. 9:10:15
C. 12:15:10Correct
D. 12:15:16

Explanation

p:q = 2/3:5/6 = 4/5 (i); q:r = 3/4:1/2 = 3/2 (ii). Multiply (i) by 3 and (ii) by 5 to match q: p:q:r = 12:15:10.

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