document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=428710>Question 428710</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A butcher has some hamburger which is 4% fat and some hamburger which is 20% fat. How much 4% fat hamburger is needed to make 120 pounds of hamburger that is 10% fat? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #297924 by </B><A HREF=/tutors/aboutme.mpl?userid=htmentor><B>htmentor(1343)</B></A><img src=\"/images/stars/stars-12.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=htmentor><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=htmentor><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=297924\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Let x = the number of pounds of 4% hamburger.  <BR>\n" );
document.write( "Then 120 - x will be the number of pounds of 20% hamburger<BR>\n" );
document.write( "The number of pounds of fat in the 10% hamburger is 0.10*120.  <BR>\n" );
document.write( "So we need to solve the following equation for x:<BR>\n" );
document.write( "0.04x + 0.20*(120 - x) = 0.10*120<BR>\n" );
document.write( "0.04x + 24 - 0.2x = 12<BR>\n" );
document.write( "Solving for x gives:<BR>\n" );
document.write( "-0.16x = -12 -> x = 75<BR>\n" );
document.write( "Ans: 75 pounds of 4% fat hamburger </SPAN>\n" );
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