SOLUTION: The product of Edna's age in two years and her age two years ago is 320. What is Edna's present age?

Algebra ->  Customizable Word Problem Solvers  -> Age -> SOLUTION: The product of Edna's age in two years and her age two years ago is 320. What is Edna's present age?      Log On

Ad: Over 600 Algebra Word Problems at edhelper.com


    

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) About Me  (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?
----------
Equation:
(E+2)(E-2) = 320
-----
E^2 -4 = 320
E^2 = 324
----
Positive solution:
E = sqrt(324) = 18 yrs (Edna's age now)
=================
Cheers,
Stan H.