document.write( "Question 1040660: Anne and Nancy use a metal alloy that is 20% copper to make jewelry. how many ounces of 14% alloy and a 24% ally must be mixed to form 100 ounces of the desired alloy.\r
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Algebra.Com's Answer #655525 by Fombitz(32388)\"\" \"About 
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Let \"X\" be the number of ounces of 14% alloy.
\n" ); document.write( "Let \"Y\" be the number of ounces of 24% alloy.
\n" ); document.write( "So the total weight equation is,
\n" ); document.write( "1.\"X%2BY=100\"
\n" ); document.write( "and the total concentration equation is,
\n" ); document.write( "\"14X%2B24Y=20%28X%2BY%29\"
\n" ); document.write( "\"14X%2B24Y=20%28100%29\"
\n" ); document.write( "\"14X%2B24Y=2000\"
\n" ); document.write( "2.\"7X%2B12Y=1000\"
\n" ); document.write( "Multiply equation 1 by -12 and add to equation 2 to solve for X.
\n" ); document.write( "\"-12X%2B7X-12Y%2B12Y=-1200%2B1000\"
\n" ); document.write( "\"-5X=-200\"
\n" ); document.write( "\"X=40\"
\n" ); document.write( "So then from eq. 1,
\n" ); document.write( "\"40%2BY=100\"
\n" ); document.write( "\"Y=60\"
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