document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=112780>Question 112780</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Anne and Nancy use a metal alloy that is 24.9% copper to make jewelry. How many ounces of a 20% alloy must be mixed with a 27% alloy to form 100 ounces of the desired alloy?  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #82200 by </B><A HREF=/tutors/aboutme.mpl?userid=SHUgrad05><B>SHUgrad05(58)</B></A><img src=\"/images/stars/stars-08.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=SHUgrad05><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=82200\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Let x= 20% alloy; y= 27% alloy<BR>\n" );
document.write( "Set up system of equations:<BR>\n" );
document.write( ".20x+.27y=24.9 <BR>\n" );
document.write( "   x+y=100  -->multiply by -.20\r<BR>\n" );
document.write( "\n" );
document.write( " .20x+.27y=24.9<BR>\n" );
document.write( "-.20x+-.20y=-20.00<BR>\n" );
document.write( "       .07y=4.9<BR>\n" );
document.write( "         y=70  -->plug back into one of the original equations\r<BR>\n" );
document.write( "\n" );
document.write( "x+70=100<BR>\n" );
document.write( "x=30\r<BR>\n" );
document.write( "\n" );
document.write( "30 ounces of 20% alloy; 70 ounces of 27% alloy<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );