Ratio and Proportion - Quantitative Aptitude (MCQ) questions for Q. 20533

Q.  If a : b = 2 : 3, find the value of (3a + 5b) : (3a – b)
- Published on 07 Jul 17

a. 2 : 7
b. 7 : 1
c. 2 : 5
d. 4 : 9

ANSWER: 7 : 1
 
Given: a/b = 2/3
(3a + 5b) / (3a – b)
= [3(a/b) +5] / [3(a/b) – 1]
= [3(2/3) +5] / [3(2/3) – 1]
= 7/1

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