# Math

Copies at the local library cost \$.15 easch. A new copier costs \$200 and it costs \$.02 to make a copy. How many copies would have to be made for the cost of making your own copies equal to the cost of copying at the library?

Thank you!!!!

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1. cost to make n copies at library = .15n
cost to make n copies on your own = 200 + .02n

.15n = 200 + .02n
times 100
15n = 20000+2n
13n = 20000
n = 1538 copies

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2. Makes sense now - thanks Reiny!!!

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