document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=905035>Question 905035</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A metallurgist has one alloy containing 21% copper and another containing 60% copper. How many pounds of each alloy must he use to make 54 pounds of a third alloy containing 27% copper? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #548984 by </B><A HREF=/tutors/aboutme.mpl?userid=richwmiller><B>richwmiller(17219)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=richwmiller><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=richwmiller><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=548984\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> a+b=54,<BR>\n" );
document.write( "21*a+60*b=27*54<BR>\n" );
document.write( "a=54-b<BR>\n" );
document.write( "21*(54-b)+60*b=1458<BR>\n" );
document.write( "1134-21b+60*b=1458<BR>\n" );
document.write( "39*b=324<BR>\n" );
document.write( "b=8.30769231<BR>\n" );
document.write( "a=54-b<BR>\n" );
document.write( "a=45.6923077 lb. at 21% b=8.30769231 lb. at 60%<BR>\n" );
document.write( "check<BR>\n" );
document.write( "21*45.6923077+60*8.30769231=27*54<BR>\n" );
document.write( "959.538462+498.461538=1458<BR>\n" );
document.write( "1458.0=1458<BR>\n" );
document.write( "ok<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );