SOLUTION: Father is three times as old as his son. 5 years ago father's age was four times his son's age then. find their present ages.

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Question 828079: Father is three times as old as his son. 5 years ago father's age was four times his son's age then. find their present ages.
Answer by richwmiller(17219) About Me  (Show Source):
You can put this solution on YOUR website!
f=3s
f-5=4*(s-5)
3s-5=4s-20
15=s
45 =f