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Algebra
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OpenStudy (anonymous):
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?
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OpenStudy (tkhunny):
Start be defining things you do not know. C = Current Age of Sam's Coach. You do the other one. Then, start making words into equations.
OpenStudy (pawanyadav):
Let Sam age be x now Then his coach age be 2x now 10 years ago According to question, 2x-10=4(x-10) So x=15 which is current age of Sam.
OpenStudy (tkhunny):
{sigh} I guess we'll never know if @edemko123 can do it.
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