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OpenStudy (buttermequeasy):
Currently, Sam's coach is twice as old as Sam. When Sam started soccer 10 years ago, his coach was four times his age. How old is Sam now? 10 25 20 15
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OpenStudy (anonymous):
Sam's Coach's age ten years ago, or 2x - 10 must be equal to four times Sam's age ten years ago, or 4(x-10) so 2x -10 = 4(x-10) solving for x or Sam's age, x=15
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