Question

the average age of father is three times the age of his son 4 year hence the age of father and son becomes 13:5 respectively what is the present age of father​

Answer 1

Step-by-step explanation:

4 years hence, the ratio becomes 13:5

let's take common multiplier as

Let father's age be x

let sons age be y

5(x+4)=13(y+4)

Age of father is three times that of son

x=3y

5(3y+4)=13(y+4)

15y+20=13y+42

15y-13y=42-20

2y=20

y=10

son's age is 10

fathers age is 30