Sunday

April 20, 2014

April 20, 2014

Posted by **Kate** on Monday, December 19, 2011 at 8:32pm.

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 -
**Reiny**, Monday, December 19, 2011 at 8:36pmcost 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 -
**Kate**, Monday, December 19, 2011 at 8:49pmMakes sense now - thanks Reiny!!!

**Related Questions**

Math - Translate and simplify "six less than twice the sum Of a number and three...

math - can someone show me how to set up this equation? the following figure ...

Math - I need help to set the equation up to solve a system to ensure that I get...

Math - The graph of the equation y=4-x consists of all the points in the ...

Math - Can someone please explain how to solve 3x^2+7x-15=0 by using the ...

math - How do I set up the quadratic equation for this problem? 4.0= (2x)^2 / (1...

math - just a little stuck can you help me out? 1.)Sales (in millions) of a ...

MATH-HELP! - The region R, is bounded by the graphs of x = 5/3 y and the curve C...

math - The region R, is bounded by the graphs of x = 5/3 y and the curve C given...

math algebra - A student walks and jogs to college each day. She averages 5km/h ...