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Mathematics
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Sixty ounces of a 50% gold alloy are mixed with 40 oz of a 40% gold alloy. Find the percent concentration of the resulting gold alloy.

Apr 21st, 2015

100x = 60 *.5 + 40 * .4

100x = 30 + 16

100x = 46

x = 46 / 100

x = 0.46

x = 46 %

Apr 21st, 2015

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Apr 21st, 2015
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Apr 21st, 2015
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