Question

Amla is twice as old as Sonu. Five years ago his age was three times Sonu's age. Find their present ages.​

Answer 1

Let present ages of Amla and Sonu be x and y respectively.

Therefore x = 2y …… eq(i)
Also (x - 5) = 3(y - 5)
=> x - 5 = 3y - 15
=> x = 3y - 10. ….. eq(ii)

Substituting x from eq(i)
=> 2y = 3y - 10
=> 10 = 3y- 2y
=> y = 10
Therefor x = 2y = 20

So, present age of Amla and Sonu is 20 and 10 years respectively.