Question

A father is three times as old as his son. Six years ago he was five times as old as his son was. Find their present age.

Answer 1

hey check the attachment....

son's age=12

father's age=3*x=3*12=36...

Answer 2

hey mate

(1) 3S = F

and six years ago they were

(2) 5*(S-6) = F-6

calculate 5*(S-6)

5S - 30 = F-6

Subtract left and right side by -F

Add 30 to left and right side

5S - F = 24

Put (2) 3S = F into the equation above

5S - 3S = 24

2S = 24

S = 12

insert result in (2) 3S = F

3*12 = F

36 = F

So the son is 12 years, and the father is 36 years.

I hope this helps

have a nice day