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15-03-2017
Mathematics

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Anne and Nancy use a metal alloy that is 20% copper to make jewelry. How many ounces of a 14% and 24% alloy must be mixed to form 100 ounces desired alloy?

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tylercooler tylercooler

15-03-2017

copper +copper = copper
0.14x+0.24(100-x) = 0.20*100 = 20

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