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31 March, 16:39

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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  1. 31 March, 17:58
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    copper + copper = copper

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