Problems based on Ages

Quantitative Aptitude (CGL)

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Five years ago, the ratio of ages of A and B was 5 : 3 and five years hence from now, the ratio will become 7 : 5. Find the average of their present ages.

Explanation:

Solution:
———————A———–B
5 years ago—–5————-3
…………………—7————–5
In both case increase of 2 years 7-5=2 and 5-3=2
hence this increase of 2 years is for 10 years
=>1=5
hence A=5*5+5=30
B=3*5+5=20
Average=25

By: Pranav Gupta

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