2000 AMC 10 Problems/Problem 4

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Problem

Chandra pays an on-line service provider a fixed monthly fee plus an hourly charge for connect time. Her December bill was $\$ $12.48$ , but in January her bill was $\$ $17.54$ because she used twice as much connect time as in December. What is the fixed monthly fee?

$\mathrm{(A)}\ \$ $2.53 \qquad\mathrm{(B)}\ \$ $5.06 \qquad\mathrm{(C)}\ \$ $6.24 \qquad\mathrm{(D)}\ \$ $7.42 \qquad\mathrm{(E)}\ \$ $8.77$

Solution

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

We want the fixed fee, which is $\boxed{\text{D}}$

2000 AMC 10 (Problems • Resources)
Preceded by Problem 3	Followed by Problem 5
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2000 AMC 10 Problems/Problem 4

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Problem

Solution

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