document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=907530>Question 907530</A>: <I><SPAN STYLE=\"word-break: break-all;\"> a rug is made by weaving 20 lbs of yarn that is 50 percent wool how many pounds of the yarnthat is 20 % wool must be used if the finished rug is to be 35 % wool </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #550430 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=550430\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> We have 20 lb of 50% yarn<BR>\n" );
document.write( "We want to add some 20% yarn to make   35% yarn<BR>\n" );
document.write( "0.2*x+0.5*20=0.35(20+x)<BR>\n" );
document.write( "0.2*x+10=7+0.35x<BR>\n" );
document.write( "0.2x-0.35x=7-10<BR>\n" );
document.write( "-0.15x=-3<BR>\n" );
document.write( "x=20 lb at 20% (4) is added to 20 lb at 50%(10) to make 35% of 40 lb(14)<BR>\n" );
document.write( "check<BR>\n" );
document.write( "0.2*20+0.5*20=0.35(20+20)<BR>\n" );
document.write( "4+10=0.35(40)<BR>\n" );
document.write( "14=14<BR>\n" );
document.write( "ok<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );