Question
The ratio of the present ages of Aman and Deepak is 3:5.
After 5 years, the ratio of their ages will be 5:8. Find the present age of Rohit, who is 7 years older than Deepak.Solution
ATQ, Let the present ages of Aman and Deepak be 3x and 5x years respectively. So, 
Solving, 24x+40 = 25x+25 ⇒ x=15 Present age of Deepak = 5x = 75 years So, the present age of Rohit = 75+7 = 82 years
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