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March 27, 2015

March 27, 2015

Posted by **Lisa** on Tuesday, July 15, 2008 at 1:30pm.

- Algebra -
**Reiny**, Tuesday, July 15, 2008 at 4:37pmABC = 0.07m + 18

XYZ = 0.10m + 9

you want ABC = XYZ, so

.07m + 18 = .1m + 9

7m + 1800 = 10m + 900

-3m = -900

m = 300

So at 300 minutes the charge would be the same from each company

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