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OpenStudy (anonymous):
staples sales cd for $2, paper for $3. if total sales were 1560, and customers bought 5 times as many cds as paper, how many cds were sold
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OpenStudy (nikato):
Let C= # of CDs and p=# of paper C=5 x P 2C + 3P= 1560 Just substitute C into second equation and solve for P and multiply P by 5 and you should get C
OpenStudy (anonymous):
tks
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