document.write( "Question 1018378: How many pounds of a 10% copper alloy must be mixed with 700 lb of a 25% copper alloy to make a 20.5% copper alloy? \n" ); document.write( "
Algebra.Com's Answer #634521 by Alan3354(69443)\"\" \"About 
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How many pounds of a 10% copper alloy must be mixed with 700 lb of a 25% copper alloy to make a 20.5% copper alloy?
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\n" ); document.write( "p pounds
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\n" ); document.write( "p*10 + 700*25 = (p+700)*20.5\r
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