SOLUTION: father age is 3 times as old as his son. in 10 years time,he will be double of his sons age . find their present ages

Question 830692: father age is 3 times as old as his son. in 10 years time,he will be double of his sons age . find their present ages
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
father age is 3 times as old as his son. in 10 years time,he will be double of his sons age . find their present ages
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Equations:
f = 3s
f+10 = 2(s+10)
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Substitute for "f" and solve for "s"::
3s + 10 = 2s + 20
s = 10 yrs (son's age now)
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f = 3s
f = 3*10 = 30 yrs (father's age now)
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Cheers,
Stan H.
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