Question no 1753 SSC CGL Tier 1 Quantitative Aptitude Questions and Answers Free Online Mock Test 43

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1 .

The ratio of the ages of A and B at present is 3 : 1. Four years earlier the ratio was 4 : 1. The present age of A is ?

[ A ] 36 years
[ B ] 32 years
[ C ] 48 years
[ D ] 40 years

Answer : Option A

Explanation :

The ratio of the ages of A and B = 3 : 1 Four years ago,
The ratio of the ages of A and B = 4 : 1 ATQ,
$4x+4\over x+4 $=$3\over1$
4x+ 4 = 3x+ 12 x = 8
So, present age of A = 4x+ 4
= 4 × 8 + 4 = 36 years

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