Question

After 20years manoj will be 5 times as old as he is now . Find his present age

Answer 1

let manoj's present age be x
as per the sum,
5x=x+20
5x-x=20
4x=20
x=20/4
x=5
so manoj's present age is 5 years.

hope it helps..

Answer 2

let present age of Manoj be x yrs
so after 20 yrs his age will become (x + 20)yrs
by given condition we get,
x+20 = 5 x
x = 5
hence Manoj s present age is 5 years