A Father, son and grandson are walking in the park. A man approaches them and asks for their age. The Father replies, "My son is as many weeks as my grandson is in days, and my grandson is as many months old as I am in years. We are all 100 years together."

How old were each?

The father is 60 years old.
The son is 35 years old.
The grandson is 5 years old.


This is a system of three equations with three unknowns:
Let f be the father, s be the son, g be the grandson.
f+g+s=100
7g=s
12g=f

Posted by S on 2003-11-04 15:33:36