Homework Help: Math

Posted by Vic on Wednesday, September 28, 2011 at 12:21am.

A record stores sells CDs for $12 each.A music club offers 5 free CDs and charges $15 for each additional CD.How many CDs would have to buy for cost to be the same?

Math - PsyDAG, Wednesday, September 28, 2011 at 2:56am
Let x = # of CDs.

12x = 15x - 60

60 = 3x

20 = x

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