Use Gaussian elimination or Gauss-Jordan elimination to solve the problem.Anne and Nancy use a metal alloy that is 22.06% copper to make jewelry. How many ounces of a 10% alloy must be mixed with a 28% alloy to form 100 ounces of the desired alloy?
A. 33 oz
B. 35 oz
C. 72 oz
D. 67 oz
Answer: A
Mathematics
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?
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