SOLUTION: I am three times as old as my son. Five years later i shall be two and a half times as old as my son.What is my age?

Question 480084: I am three times as old as my son. Five years later i shall be two and a half times as old as my son.What is my age?
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
I am three times as old as my son. Five years later i shall be two and a half times as old as my son.What is my age?
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Equations:
m = 3s
(m+5) = (5/2)(s+5)
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Substitute for "m" and solve for "s":
3s+5 = (5/2)s + (25/2)
(1/2)s = 15/2
s = 15 (son's age now)
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m = 3s = 45 (father's age now)
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cheers,
Stan H.
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