document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=727784>Question 727784</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Pure acid is to be added to a 10% acid solution to obtain 90L of 55% solution. What amounts of each should be used? A)How many liters of 100% pure acid should be used to make the solution?  B)How many liters of the 10% solution should be in the mixture? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #445216 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=445216\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> VARIABLES<BR>\n" );
document.write( "u = how much 10% acid to use, unknown<BR>\n" );
document.write( "v = how much 100% acid to use, unknown<BR>\n" );
document.write( "M = volume of resulting solution, 90L<BR>\n" );
document.write( "L = percent of low concentration acid material to use, 10%<BR>\n" );
document.write( "T = intended percent concentration of acid in the resulting solution, 55%\r<BR>\n" );
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document.write( "EQUATIONS<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=highlight%28%28Lu%2Bv%29%2FM=T%29 ALIGN=MIDDLE  ALT=\"highlight%28%28Lu%2Bv%29%2FM=T%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > AND <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=highlight%28u%2Bv=M%29 ALIGN=MIDDLE  ALT=\"highlight%28u%2Bv=M%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "PROCESS<BR>\n" );
document.write( "Those are two equations with two unknowns.  Both equations are linear in u and v.  Solve for u and v.  Substitute known and given values to compute u and v. </SPAN>\n" );
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