SOLUTION: How much of an alloy that is 40% copper should be mixed with 300 ounces of an alloy that is 60% copper in order to get an alloy that is 50% copper?

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Question 651185: How much of an alloy that is 40% copper should be mixed with 300 ounces of an alloy that is 60% copper in order to get an alloy that is 50% copper?
Answer by Alan3354(69443) About Me  (Show Source):
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How much of an alloy that is 40% copper should be mixed with 300 ounces of an alloy that is 60% copper in order to get an alloy that is 50% copper?
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50 is the average of 40 & 60, so it's equal amounts.