document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=937738>Question 937738</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A metal alloy weighing 9 lb. and containing 75% copper is melted and mixed with 11 lb. of a different alloy which contains 15% copper. What percent of the resulting alloy is copper?  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #571165 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><IMG SRC=http://www.algebra.com/images/aboutme-small.gif BORDER=0 alt=\"About Me\" VALIGN=MIDDLE></A>&nbsp;<IMG SRC=http://www.algebra.com/images/nopicture.jpg><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=571165\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> A metal alloy weighing 9 lb. and containing 75% copper is melted and mixed with 11 lb. of a different alloy which contains 15% copper. What percent of the resulting alloy is copper? <BR>\n" );
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document.write( "Equation:<BR>\n" );
document.write( "copper + copper = copper<BR>\n" );
document.write( "0.75*9 + 0.15*11 = x*20 lb<BR>\n" );
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document.write( "75*9 + 15*11 = x*2000<BR>\n" );
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document.write( "x = (675 + 161)/2000<BR>\n" );
document.write( "x = 41.8% (percent of copper in the final mix)<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
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