document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=710342>Question 710342</A>: <I><SPAN STYLE=\"word-break: break-all;\"> If a 7% saline solution and a 4% saline solution are mixed to make 500 milliliters of a 5% saline solution, how much of each solution, to the nearest milliliter, is needed? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #436969 by </B><A HREF=/tutors/aboutme.mpl?userid=josgarithmetic><B>josgarithmetic(39617)</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=436969\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> CHOOSING VARIABLES FOR ALL NUMBERS<BR>\n" );
document.write( "Concentration of Low percent saline, L<BR>\n" );
document.write( "Concentration of High percent saline, H<BR>\n" );
document.write( "Target concentration of saline wanted, T<BR>\n" );
document.write( "Amount of Low concentration saline to use, u, unknown<BR>\n" );
document.write( "Amount of High concentration saline to use, v, unknown<BR>\n" );
document.write( "Amount of saline solution made, M, or 500 ml. in the example\r<BR>\n" );
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document.write( "From problem description:<BR>\n" );
document.write( "L=4%, H=7%, T=5%, M=500 ml.\r<BR>\n" );
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document.write( "Create Equations to Represent Situation:\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28uL%2BvH%29%2FM=T ALIGN=MIDDLE  ALT=\"%28uL%2BvH%29%2FM=T\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=u%2Bv=M ALIGN=MIDDLE  ALT=\"u%2Bv=M\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "Solve that system for u and v.  <BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=uL%2BvH=MT ALIGN=MIDDLE  ALT=\"uL%2BvH=MT\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Use the volume sum equation for known mixture volume amount to substitute for v.<BR>\n" );
document.write( "Using v=M-u,<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=uL%2B%28M-u%29H=MT ALIGN=MIDDLE  ALT=\"uL%2B%28M-u%29H=MT\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=uL-uH=-MH%2BMT ALIGN=MIDDLE  ALT=\"uL-uH=-MH%2BMT\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=u%28L-H%29=M%28T-H%29 ALIGN=MIDDLE  ALT=\"u%28L-H%29=M%28T-H%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=highlight%28u=%28M%28T-H%29%29%2F%28L-H%29%29 ALIGN=MIDDLE  ALT=\"highlight%28u=%28M%28T-H%29%29%2F%28L-H%29%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "You could substitute the given values into this formula for u, and then compute u.  Then, use the u+v=M relationship to compute v. </SPAN>\n" );
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