document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=723962>Question 723962</A>: <I><SPAN STYLE=\"word-break: break-all;\"> \r<BR>\n" );
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document.write( "How much of a 75% copper alloy should be melted into 62 kg of a 35% copper alloy to produce an alloy which is 50% copper? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #443500 by </B><A HREF=/tutors/aboutme.mpl?userid=checkley79><B>checkley79(3341)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=checkley79><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=443500\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> .75x+.35*62=.50(62+x)<BR>\n" );
document.write( ".75x+21.70=31+.50x<BR>\n" );
document.write( ".75x-50x=31-21.70<BR>\n" );
document.write( ".25x=9.30<BR>\n" );
document.write( "x=9.30/.25<BR>\n" );
document.write( "x=37.2 kg of the 75% alloy is needed.<BR>\n" );
document.write( "Proof:<BR>\n" );
document.write( ".75*37.2+.35*62=.50(62+37.2)<BR>\n" );
document.write( "27.9+21.70=.50*99.2<BR>\n" );
document.write( "49.60=49.60 </SPAN>\n" );
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