A student finished 72 of her homework problems in class. If the ratio of problems she finished to problems she still had left wa
s 8 : 1, how many homework problems did she have total?
1 answer:
Finished:Left
8:1
8/1 = 72/x
Cross Multiply
8x=72
divide each side by 8
x=9
She already finished 72 and has 9 remaining
Total = Finished + Remaining = 72 + 9 = 81
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