SOLUTION: A father is twice as old as his son. In 20 years, the son will be 2/3 as old as his father. How old are each now?

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Question 811127: A father is twice as old as his son. In 20 years, the son will be 2/3 as old as his father. How old are each now?
Answer by richwmiller(17219) About Me  (Show Source):
You can put this solution on YOUR website!
f=2s,
(s+20)=2/3(f+20)
f = 40, s = 20