Solve the problem.Anne and Nancy use a metal alloy that is 17% copper to make jewelry. How many ounces of a 15% alloy must be mixed with a 18% alloy to form 78 ounces of the desired alloy?
A. 26 oz
B. 57 oz
C. 28 oz
D. 52 oz
Answer: A
Mathematics
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A. 
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