document.write( "Question 477873: how much of an allow that is 30% copper should be mixed with 200 ounces of an alloy that is 70% copper in order to get an alloy that is 50% copper \n" ); document.write( "

Algebra.Com's Answer #327457 by Alan3354(69443) $\"\"$ $\"About$

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50 is the average of 30 and 70, so it's equal amounts.
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