Question

father age is three times more than his son age after 4 years father and son age ratio will be 13:5 respectively what is the present age of father​

Answer 1

Step-by-step explanation:

let the present age of father be y years and present age of his son be x years

A.T.Q

$y = 3x \\ (13y + 4) = (5x + 4)$

solving eq..1 and 2

$(15y + 4) =( 3y + 4) \\3x - 15y = 0 \: \: \: eq3 \\ put \: power \: of \: x \: in \: eq \: 3 \\ 3x - 15(3x) = 0 \\ 45x - 3x = 0$

x = 42

put power in eq 1