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OpenStudy (anonymous):
Karen and two of her friends are splitting the bill for their lunch. They each got back $2 in change after the $30 lunch bill was paid. Which of the following can be used to find the amount of money each girl contributed?
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OpenStudy (anonymous):
OpenStudy (tkhunny):
If n is the number of girls eating lunch... \(Contribution\;=\;\dfrac{30 - 2n}{n} = \dfrac{30}{n} - 2\) Which description means one of those?
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