document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=769480>Question 769480</A>: <I><SPAN STYLE=\"word-break: break-all;\"> How do you set up the following problem? The cost of 40lb of sugar and 16lb of flour is $26, as is the cost of 30lb of suger and 25lb of flour. Find the cost per pound of each item. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #468875 by </B><A HREF=/tutors/aboutme.mpl?userid=Cromlix><B>Cromlix(4381)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Cromlix><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=Cromlix><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=468875\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Sugar = x<BR>\n" );
document.write( "Flour = y<BR>\n" );
document.write( "40x + 16y = 26....1<BR>\n" );
document.write( "30x + 25y = 26....2<BR>\n" );
document.write( "Multiply (1) by 3<BR>\n" );
document.write( "and (2) by 4<BR>\n" );
document.write( "120x + 48y = 78...3<BR>\n" );
document.write( "120x + 100y = 104...4<BR>\n" );
document.write( "Subtract (3) from (4)<BR>\n" );
document.write( "        52y = 26<BR>\n" );
document.write( "          y = 26/52<BR>\n" );
document.write( "          y = 0.5<BR>\n" );
document.write( "Substitute y = 0.5 in (1)<BR>\n" );
document.write( "40x + 16y = 26<BR>\n" );
document.write( "40x + 8 = 26<BR>\n" );
document.write( "40x     = 26 - 8<BR>\n" );
document.write( "40x     = 18<BR>\n" );
document.write( "  x     = 18/40<BR>\n" );
document.write( "  x = 0.45<BR>\n" );
document.write( "So, Sugar costs 45 cents per lb.<BR>\n" );
document.write( "Flour costs 50 cents per lb.<BR>\n" );
document.write( "Hope this helps.<BR>\n" );
document.write( ":-) </SPAN>\n" );
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