SOLUTION: Marie is three years younger than her friend Rosalie. In seven years the product of their ages will be five more than thrice the product of their ages five years ago. How old is Ma

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Question 1166706: Marie is three years younger than her friend Rosalie. In seven years the product of their ages will be five more than thrice the product of their ages five years ago. How old is Marie?
Answer by josgarithmetic(39617) About Me  (Show Source):
You can put this solution on YOUR website!
Rosalie is m+3
and
Marie is m.

%28m%2B3%2B7%29%28m%2B7%29=5%2B3%28m%2B3-5%29%28m-5%29--------------simplify and solve.