document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=815286>Question 815286</A>: <I><SPAN STYLE=\"word-break: break-all;\"> How many liters of a 10% solution of acid should mixed with 60% solution of acid to obtain a 20 liters of 50% solution? \r<BR>\n" );
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document.write( "Please show me a step by step guide through because I want understand the material to pass a quiz on these types of questions. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #490831 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=490831\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> 100*{amount of pure acid}/{amount of solution}={percentage concentration}\r<BR>\n" );
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document.write( "Let u = how many liters of the 10% acid<BR>\n" );
document.write( "Let v = how many liters of the 60% acid<BR>\n" );
document.write( "Wanting 20 liters of acid solution, <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=u%2Bv=20 ALIGN=MIDDLE  ALT=\"u%2Bv=20\"   DISABLED_style= \"max-width:90%; height:auto;\" >.\r<BR>\n" );
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document.write( "Using the percentage concentrations,<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=10u%2B60v ALIGN=MIDDLE  ALT=\"10u%2B60v\"   DISABLED_style= \"max-width:90%; height:auto;\" > is how much of the actual pure acid; this is in scaled-up form, since the percent concentrations are 100 times larger than their fractional meanings.\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=highlight%28%2810u%2B60v%29%2F20=50%29 ALIGN=MIDDLE  ALT=\"highlight%28%2810u%2B60v%29%2F20=50%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >  and <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=highlight%28u%2Bv=20%29 ALIGN=MIDDLE  ALT=\"highlight%28u%2Bv=20%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >;<BR>\n" );
document.write( "Solve the system for u and v.<BR>\n" );
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