Solve the problem.Anne and Nancy use a metal alloy that is 19.8% copper to make jewelry. How many ounces of an alloy that is 10% copper must be mixed with an alloy that is 24% copper to form 70 ounces of the desired alloy?

A. 49 oz
B. 21 oz
C. 23 oz
D. 54 oz


Answer: B

Mathematics

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