SOLUTION: a mother is 60 years old and her child is 24 years old. when in the past was the product of their age 160?

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Question 514272: a mother is 60 years old and her child is 24 years old. when in the past was the product of their age 160?
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
a mother is 60 years old and her child is 24 years old. when in the past was the product of their age 160?
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Equation:
(60-x)(24-x) = 160
x^2-84x+1440 = 160
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x^2-84x+1280 = 0
x = 20 or x = 64
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Acceptable answer:
x = 20 years
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Cheers,
Stan H.
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