Question

when George was born his father was 36 years old.Now George is 10 % of his father's age.What is George's age now?

Answer 1

$10\%of \: 36 = 12$

Answer 2

let the no. of year passed after birth be x
age of George father during birth of George=. 36 years
ATQ
0+ x =(36+x)10%
x=(36+x)10/100
100x=360+ 10x
100x-10x=360
90x = 360
x= 360/90
x=4
means 4 year have passed after George birth
thus his age is 4 years