Question 1037712: A man is 3 times as old as his son. 5 years ago, he was 4 times as old as his son. Find their present ages. Found 2 solutions by stanbon, Vixiachase:Answer by stanbon(75887) (Show Source):
You can put this solution on YOUR website! A man is 3 times as old as his son. 5 years ago, he was 4 times as old as his son. Find their present ages.
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f = 3s
f-5 = 4(s-5)
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Substitute for "f" and solve for "s"::
3s-5 = 4s-20
s = 15 yrs (son's age)
f = 3s = 45 yrs (father's age)
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Cheers,
Stan H.
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