document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=760343>Question 760343</A>: <I><SPAN STYLE=\"word-break: break-all;\"> please help me with this problem! ): I don't know how to do this. \r<BR>\n" );
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document.write( "An 11% salt solution was mixed with an 18% salt solution to make 20L of a 16% solution. How many liters of 11% salt solution were required?  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #462631 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=462631\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Assign variables to all quantities.<BR>\n" );
document.write( "L = 11%, for 11% salt<BR>\n" );
document.write( "H = 18%, for 18% salt<BR>\n" );
document.write( "T = 16%, the target value<BR>\n" );
document.write( "M = 20 Liters, the target amount of solution<BR>\n" );
document.write( "u = unknown volume of the 11% solution<BR>\n" );
document.write( "v = unknown volume of the 18% solution\r<BR>\n" );
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document.write( "Form the equations for the situation.<BR>\n" );
document.write( "Resulting salt concentration is (amount of pure salt)/(amount of salt solution result).<BR>\n" );
document.write( "Sum of solutions used to prepare the target solution will be 20 liters.\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28Lu%2BHv%29%2FM=T ALIGN=MIDDLE  ALT=\"%28Lu%2BHv%29%2FM=T\"   DISABLED_style= \"max-width:90%; height:auto;\" > and <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;\" ><BR>\n" );
document.write( "Solve this system for u and v.\r<BR>\n" );
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document.write( "Here is a start:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=Lu%2BHv=TM ALIGN=MIDDLE  ALT=\"Lu%2BHv=TM\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "and from the volume sum equation, <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=v=M-u ALIGN=MIDDLE  ALT=\"v=M-u\"   DISABLED_style= \"max-width:90%; height:auto;\" >;<BR>\n" );
document.write( "substitute for v,<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=Lu%2BH%28M-u%29=TM ALIGN=MIDDLE  ALT=\"Lu%2BH%28M-u%29=TM\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=Lu%2BHM-Hu=TM ALIGN=MIDDLE  ALT=\"Lu%2BHM-Hu=TM\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=Lu-Hu=TM-HM ALIGN=MIDDLE  ALT=\"Lu-Hu=TM-HM\"   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=M%28T-H%29%2F%28L-H%29%29 ALIGN=MIDDLE  ALT=\"highlight%28u=M%28T-H%29%2F%28L-H%29%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > a formula now for u,...<BR>\n" );
document.write( ".<BR>\n" );
document.write( ". </SPAN>\n" );
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