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March 30, 2015

Homework Help: algebra

Posted by Anonymous on Tuesday, January 21, 2014 at 3:44pm.

British sterling silver is a copper-silver alloy that is 7.5% copper by weight. How many grams of pure copper and how many grams of British sterling silver should be used to prepare 320 grams of a copper-silver alloy that is 20% copper by weight? (Round your answers to one decimal place.)

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