dorisimo dorisimo

08-02-2017
Mathematics

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A family member has some five-dollar bills and one-dollar bills in her wallet. Altogether she has 18 bills and a total of $62

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trombonebookworm trombonebookworm

08-02-2017

5x+y=62
x+y=18

Five-dollar bills: 11 bills
One-dollar bills: 7 bills

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