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A jar of dimes and quaters contains $15.25. There are 103 coins in all. How many of each are there?
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by wyzilla at January 23, 2010

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Q+D=103.25Q+.10D=15.25D=103-Q.25Q+.10(103-Q)=15.25.25Q+10.3-.10Q=15.25.15Q=4.95Q=33D=103-QD=103-33D=70

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Chac January 24, 2010