Question

If the age of father and son os 5:8 after 5 years the son age is 15 years then the age of fathet is

Answer 1

let age of father be x yrs
let the age of son be y yrs
so according to the question,
5x=8y
x=8/5into y
and,
x+20=y+5
x+15=y
so from here
age of father is 40yrs