SOLUTION: Kevin is 7 years older than his sister. In 2 years, he will be twice as old as she is. How old are they now?

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Question 1131003: Kevin is 7 years older than his sister. In 2 years, he will be twice as old as she is. How old are they now?
Answer by josgarithmetic(39620) About Me  (Show Source):
You can put this solution on YOUR website!
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Kevin is 7 years older than his sister. In 2 years, he will be twice as old as she is WILL BE. How old are they now?
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Kevin, x+7
Sister, x

%28x%2B7%29%2B2=2%28x%2B2%29
-
x%2B9=2x%2B4
x=5

Kevin is 12
and his sister is 5.