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AoPS Wiki:Problem of the Day/July 27, 2011

< AoPS Wiki:Problem of the Day
Revision as of 20:29, 26 July 2011 by Btilm305 (talk | contribs) (Protected "AoPSWiki:Problem of the Day/July 27, 2011": Problem of the Day ([edit=sysop] (indefinite) [move=sysop] (indefinite)))
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I can buy a 15% off coupon at a store for 10 dollars. In dollars, how much money would I have to spend to make up for money I spent on the coupon?

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