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OpenStudy (anonymous):
A jeweler wants to combine a 60% gold alloy with a 20% gold alloy to make 1000 grams of 50% gold alloy. How many grams of 60% alloy should be used?
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OpenStudy (mertsj):
Let x = amount of 60% alloy Then 1000-x = amount of 20% alloy Now base the equation on the amount of gold in each quantity: .60x+.20(1000-x)=.50(1000)
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