A man is five times as old as his son. Four years ago the man was thirteen times as old as his son

Question

 

Please help. Been stuck for a while

Answer 1

x man's age, y his son's age

x=5y

(x-4)=13(y-4)

5y-4=13y-52

8y=48

y=6, (son's age)

x=5y=30 (dad's age)