SOLUTION: A mother is 23 years older than her son. In 7 years she will be twice as old as her son. How old is the mother and son?
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Question 992913: A mother is 23 years older than her son. In 7 years she will be twice as old as her son. How old is the mother and son?
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
A mother is 23 years older than her son. In 7 years she will be twice as old as her son. How old is the mother and son?
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Equations;
m = s + 23
m+7 = 2(s+7)
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Substitute for "m" and solve for "s"::
s+30 = 2s + 14
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s = 16 yrs (son's age now)
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Solve for "m"::
m = 16+23 = 39 yrs (mother's age now)
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Cheers,
Stan H.
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