document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=704186>Question 704186</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Kevin operates a soybean farm. He buys many supplies in the bulk. Often the bulk products need to be custom mixed before Kevin can use them. Jo apply herbicide to a large field he must mix a solution of 67% herbicide with a solution of 46% herbicide to form 42 liters of a 55% solution. How much of the 67% solution must he use? Write a system of equations to find how much of the 67% solution must he use. Identify the variables, write the equation, solve the system by using Elimination or Substitution methods. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #433970 by </B><A HREF=/tutors/aboutme.mpl?userid=josgarithmetic><B>josgarithmetic(39618)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=josgarithmetic><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/images/nopicture.jpg><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=433970\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> This same question is asked many times in many ways for so many situations.\r<BR>\n" );
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document.write( "x amount of low concentration material = unknown<BR>\n" );
document.write( "L concentration of low conce. material = 0.46<BR>\n" );
document.write( "y amount of higher concentration material = unknown<BR>\n" );
document.write( "H concentration of higher conc. material =0.67<BR>\n" );
document.write( "T Target concentration wanted in the mixture = 0.55<BR>\n" );
document.write( "a amount of target concentration mixture =42 liter\r<BR>\n" );
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document.write( "Your system of equations to solve:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x%2By=a+liters ALIGN=MIDDLE  ALT=\"x%2By=a+liters\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28x%2AL%2By%2AH%29%2Fa=T ALIGN=MIDDLE  ALT=\"%28x%2AL%2By%2AH%29%2Fa=T\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "Start from the system by multiplication of the T equation by a.<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x%2AL%2By%2AH=a%2AT ALIGN=MIDDLE  ALT=\"x%2AL%2By%2AH=a%2AT\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Use the liters equation to substitute for either x or y in the adjusted T equation, and continue... </SPAN>\n" );
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