Question

Sixteen years from now hoping age will be five times his present age. what is his present age?

Answer 1

Now X
Then X+16=5X
5x-x=16
4x=16
x=4 ...Mark Me Brainless :D

Answer 2

let the current age be x
after 16 yrs
his age will be
x+16

according to question
x+16=5x
5x-x=16
4x=16
x=16/4=4

so his present age is 4 years