SOLUTION: Grace is twice as old as Tim. Ten years ago, she was 4 times as old as Tim. How old is each now?

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Question 353466: Grace is twice as old as Tim. Ten years ago, she was 4 times as old as Tim. How old is each now?
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
Grace is twice as old as Tim. Ten years ago, she was 4 times as old as Tim. How old is each now?
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Equations:
g = 2t
(g-10)=4(t-10)
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Substitute for "g" and solve for "t":
(2t-10) = 4t-40
2t = 30
t = 15 (Tim's age now)
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Since g = 2t, g = 30 (Grace's age now)
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Cheers,
Stan H.