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OpenStudy (anonymous):
Coach Johnson is 10 years older than Tim. When Tim started football 3 years ago, Coach Johnson was twice his age. How old is Tim now?
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OpenStudy (raden):
it can represented as : J = T+10 ... (1) J-3 = 2(T-3) ...(2)
OpenStudy (raden):
with T is Tim's old and J is Johnson's old solve for T
OpenStudy (raden):
subtitute the 1st equation to the 2nd eq J-3 = 2(T-3) T+10-3 = 2(T-3) T+7 = 2T - 6 it should helps continued ....
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