Math

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Can you please help me set up this equation?
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!!!!

  • Math -

    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

  • Math -

    Makes sense now - thanks Reiny!!!

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