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2000 AMC 10 Problems/Problem 4

Revision as of 19:02, 8 January 2009 by 5849206328x (talk | contribs)

Let $x$ be the fixed fee, and $y$ be the amount she pays for the minutes she used in the first month.

$x+y=12.48$

$x+2y=17.54$

$y=5.06$

$x=7.42$

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