The Brothers Ages Aptitude Problem is as follows :
Bharath is 5 years elder than Akash who is 4 years elder than Raghu. The sum of their ages is 61. Find the age of Akash.
From the question, it is obvious that Raghu is the youngest brother. Let his age be x.
Now Akash’s age is = x + 4
and Bharaths age is = 5 + Akash’s age = 5 + (x + 4) = x + 9
So sum of all the ages is = x + (x + 4) + (x + 9) => 3x + 13 = 61.
3x = 61 -13 = 48
Implies , x = 48/3 = 16
This is Raghu’s age. Hence Akash’s age is 16 + 4 = 20 yrs
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You can understand more about solving ages problem, if you watch this lecture on Ages – Basics Cheers!