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OpenStudy (anonymous):
A Goldsmith combined an alloy that cost $4.30 per once with an alloy that cost $1.80 per once. How many ounces of each were used to make a mixture of 200 oz costing. $2.50 pet ounce?
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OpenStudy (anonymous):
solve \[4.30x+1.80(200-x)=200\times 2.50\] for \(x\)
OpenStudy (anonymous):
X=56
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