document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=513472>Question 513472</A>: <I><SPAN STYLE=\"word-break: break-all;\"> AN alloy containing 40% gold and an alloy containing 70% gold are to be mixed to produce 50 pounds of an alloy containing 60% gold. How much of each alloy is needed? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #343040 by </B><A HREF=/tutors/aboutme.mpl?userid=Maths68><B>Maths68(1474)</B></A><img src=\"/images/stars/stars-12.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Maths68><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/cgi-bin/show-face.mpl?user=Maths68><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=343040\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Alloy A<BR>\n" );
document.write( "Amount = x lb <BR>\n" );
document.write( "Concentration =40% =0.4 <BR>\n" );
document.write( "================================<BR>\n" );
document.write( "Alloy B<BR>\n" );
document.write( "Amount = 50-x lb<BR>\n" );
document.write( "Concentration =70% = 0.70<BR>\n" );
document.write( "==============================<BR>\n" );
document.write( "Final Alloy<BR>\n" );
document.write( "Amount =50 lb<BR>\n" );
document.write( "Concentration =60%=0.6<BR>\n" );
document.write( "=================================<BR>\n" );
document.write( "[Amount Alloy A * Concentration A] + [Amount Alloy B * Concentration of B] = Amount of Final Alloy * Concentration of Final Alloy<BR>\n" );
document.write( "==================================<BR>\n" );
document.write( "(x)(0.4)+(50-x)(0.7)=(50)(0.6)<BR>\n" );
document.write( "0.4x+35-0.7x=30<BR>\n" );
document.write( "0.4x-0.7x=30-35<BR>\n" );
document.write( "-0.3x=-5<BR>\n" );
document.write( "-0.3x/-0.3=-5/-0.3<BR>\n" );
document.write( "x=16.66<BR>\n" );
document.write( "===========================<BR>\n" );
document.write( "Alloy A<BR>\n" );
document.write( "Amount = 16.66 lb <BR>\n" );
document.write( "Concentration =40% =0.4 <BR>\n" );
document.write( "================================<BR>\n" );
document.write( "Alloy B<BR>\n" );
document.write( "Amount = 50-16.66=33.33 lb<BR>\n" );
document.write( "Concentration =70% = 0.70<BR>\n" );
document.write( "==============================<BR>\n" );
document.write( "====================================================<BR>\n" );
document.write( "A 16.66 pounds alloy containing 40% gold and a 33.33 pounds alloy containing 70% gold are to be mixed to produce 50 pounds of an alloy containing 60% gold </SPAN>\n" );
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