Question

A father is 3 times as old as his son after 11 years his age will be twice as that of his son then. Find his present age

Answer 1

let the present age of father be X and the sun age is 3X

after 11 years X will become as 11X and 3X will become as 11X ×2

then 11X × 2 is nothing but 22X

let the age of the son be A

then A is equals to 22 x - 11 x

22 x minus 11X is nothing but 11 x

therefore age of son is 11

as the father's age is three times of the son 3 into 11 is nothing but 33

at last I conclude that son's age is 11 and father's age is 33 at the present