SOLUTION: The product of Edna's age in two years and her age two years ago is 320. What is Edna's present age?
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Question 884678: The product of Edna's age in two years and her age two years ago is 320. What is Edna's present age?
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
The product of Edna's age in two years and her age two years ago is 320. What is Edna's present age?
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Equation:
(E+2)(E-2) = 320
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E^2 -4 = 320
E^2 = 324
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Positive solution:
E = sqrt(324) = 18 yrs (Edna's age now)
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Cheers,
Stan H.
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