document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1130677>Question 1130677</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A farmer has two types of milk, one that is 24% butterfat and another which is 18% butterfat. How much of each should he use to end up with 42 gallons of 20% butterfat?<BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #747294 by </B><A HREF=/tutors/aboutme.mpl?userid=addingup><B>addingup(3677)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=addingup><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=addingup><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=747294\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> x = 24%<BR>\n" );
document.write( "y = 18%<BR>\n" );
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document.write( "x + y = 42 therefore y = 42 - x<BR>\n" );
document.write( "0.24x + 0.18y = 0.20(42) substitute for y:<BR>\n" );
document.write( "0.24x + 0.18(42 - x) = 8.4<BR>\n" );
document.write( "0.24x + 7.56 - 0.18x = 8.4<BR>\n" );
document.write( "0.06x = 0.84<BR>\n" );
document.write( "x = 14<BR>\n" );
document.write( "He should use 14 gallons of the 24% butterfat and (42-14= 28) 28 gallons of the 18% to get 42 gallons of 20%<BR>\n" );
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