SOLUTION: Robert is 3 times as older as his son; but 14 years ago he was 10 times as older as his son. Find the age of his son.

Question 358304: Robert is 3 times as older as his son; but 14 years ago he was 10 times as older as his son. Find the age of his son.
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
Robert is 3 times as old as his son; but 14 years ago he was 10 times as older as his son. Find the age of his son.
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Equations:
r = 3s
r-14 = 10(s-14)
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Substitute for "r" and solve for "s":
3s-14 = 10s-140
7s = 126
s = 18 (son's age now)
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Cheers,
Stan H.
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