SOLUTION: Joe is 15 years older than Sally. in 15 years Joe will be 3 times as old as sally is now. How old is Sally?
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Question 150895: Joe is 15 years older than Sally. in 15 years Joe will be 3 times as old as sally is now. How old is Sally?
Answer by vleith(2983) (Show Source): You can put this solution on YOUR website!
Let j be joe's age and s be sally's age.
Given
Also given
Substituting from above yields
Joe is 30
sally is 30-15 = 15
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