SOLUTION: The sum of 3 times Gary's age and 5 times Tom's age is 150. Tom is 9 years less than twice as old as Gary is. How old is Tom?

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Question 205779: The sum of 3 times Gary's age and 5 times Tom's age is 150. Tom is 9 years less than twice as old as Gary is. How old is Tom?
Answer by rfer(16322) About Me  (Show Source):
You can put this solution on YOUR website!
gary =x=15
tom=2x-9=21
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3x+5(2x-9)=150
3x+10x-45=150
13x=195
x=15