A father is 9 times as old as his son. In three years, the father will be 6 times as old as his son.

How old is the son?

Guest Aug 4, 2021

#1**+2 **

f = 9s

In three years :

f+3 = 6 (s+3) Sub in the red equation

9s +3 = 6 (s+3)

9s + 3 = 6s + 18

3s = 15

** s = 5 y/o ** then f = 9s = 45 y/o

ElectricPavlov Aug 4, 2021