Question

A father is 30 times older than his son. 18 years later, he will be only thrice as old as his son. Fathers present age?

Answer 1

let the father age be = x

and the son age be= y


now according to 1st condition

x= 30y ........... ( -1 )


according to 2nd condition


x+18 = 3(y+18)

x-3y= 36. ............ (-2)


now using Eq 1 and 2


we get y = 36/27 =4/3 = 1.3 years

x = 40 years



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Answer 2

hey! your answer is here..
let son age be x
then the father age will be
30x

18 year later

30x+18=3(x+18)
30x+18=3x+54
30x-3x=54-18
27x=36
x=36/27
x=4/3

father age = 30x
= 30*4/3
=40

hope it helps......