SOLUTION: How much of an alloy that is 40% copper should be mixed with 500 ounces of an alloy that is 70% copper in order to get an alloy that is 60%

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Question 383850: How much of an alloy that is 40% copper should be mixed with 500 ounces of an alloy that is 70% copper in order to get an alloy that is 60%
Answer by scott8148(6628) About Me  (Show Source):
You can put this solution on YOUR website!
(x)(40%) + (500)(70%) = (500 + x)(60%)