Hermie goes Christmas Shopping

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Hermie goes Christmas Shopping

Hermie the Elf wants to buy Christmas gifts for the students in his dentistry class. Unfortunately, he only has coins - pennies, nickels, dimes, and quarters. In all, he spends twice as many nickels as quarters, four more dimes than nickels, and the number of pennies was seven less than the total of his nickels, dimes and quarters.

In all, he spent $4.57. How many coins did he spend?

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Problem by Mr. Twitchell

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