SOLUTION: Evan is 31 years younger than Tiffany. 9 years ago, Tiffany's age was 2 times Evan's age. How old is Evan now?

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Question 1164471: Evan is 31 years younger than Tiffany. 9 years ago, Tiffany's age was 2 times Evan's age. How old is Evan now?
Found 2 solutions by josgarithmetic, ikleyn:
Answer by josgarithmetic(39630) About Me  (Show Source):
You can put this solution on YOUR website!
x Tiffany
y Evan
system%28y=x-31%2Cx-9=2%28y-9%29%29
Question asks for y.
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x=y%2B31, substitute into other equation,
-
y%2B31-9=2y-18
31-9%2B18=y
highlight%28y=40%29

Answer by ikleyn(52879) About Me  (Show Source):
You can put this solution on YOUR website!
.

9 years ago, Evan was 31 years younger than Tiffany and Tiffany's age was 2 times Evan's age.


Hence, 9 years ago Evan was 31 years old and Tiffany was 62 years old.


It means that now Evan is 40 years old and Tiffany is 62+9 = 71 years old.    ANSWER

Solved.