Question

A man is 4 times as old as his son after 16 year he will be only twice as old as his son find thier presemt age

Answer 1

Let his present age be x and his son's be y.
x=4y

(x+16)=2(y+16)
x+16=2y+32
x-2y=16
4y-2y=16
2y=16
y=8


His age, x=32
His son's age, y=8