After 32 years from now, a boy will be five times as old as he was 8 years back. How old the boy is now?

(A) 20 years

(B) 19 years

(C) 18 years

(D) 17 years

Let be the present age of a boy is x

5(x-8)=x+32

5x-40=x+32

5x-x=32+40

4x=72

x=18

Ans present age of a boy is 18 years