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Mathematics 7 Online
OpenStudy (anonymous):

Ernie has $3.30 in nickels and dimes. He has twelve more nickels than dimes. How many of each coin does he have?

OpenStudy (danjs):

3.30 = .05N +0.10D AND N = D + 12

OpenStudy (danjs):

18 Dimes and 30 Nickles

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