document.write( "Question 107185: An alloy of metals is 25% copper another alloy is 50% copper. How much of each alloy is used to make 1000 grams of an alloy with 45% copper.
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An alloy of metals is 25% copper another alloy is 50% copper. How much of each alloy is used to make 1000 grams of an alloy with 45% copper.
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\n" ); document.write( "Let x = amt of 25% copper required
\n" ); document.write( "Then
\n" ); document.write( "(1000-x) = amt of 50% copper required:
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\n" ); document.write( "A simple equation:
\n" ); document.write( ".25x + .50(1000-x) = .45(1000) \n" ); document.write( "

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