document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=714702>Question 714702</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Nathan needs to make 30L of a 28% acid solution. He has 2 bottles, one containing 20% acid and the other containing 50% acid. What volume of each should he mix together to make the 28% acid solution? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #438956 by </B><A HREF=/tutors/aboutme.mpl?userid=josgarithmetic><B>josgarithmetic(39630)</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=438956\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> A very routine exercise.  Let x = volume of the 20% acid to use and y = volume of the 50% acid to use.\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%2820x%2B50y%29%2F30=28 ALIGN=MIDDLE  ALT=\"%2820x%2B50y%29%2F30=28\"   DISABLED_style= \"max-width:90%; height:auto;\" > AND <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x%2By=30 ALIGN=MIDDLE  ALT=\"x%2By=30\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "The numbers were picked to make the arithmetic easier to do.<BR>\n" );
document.write( "Managing the percentage equation,<BR>\n" );
document.write( "(2x+5y)/3=28   just by removing factor of <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=1=10%2F10 ALIGN=MIDDLE  ALT=\"1=10%2F10\"   DISABLED_style= \"max-width:90%; height:auto;\" > from left side;<BR>\n" );
document.write( "2x+5y=3*28<BR>\n" );
document.write( "2x+5y=84\r<BR>\n" );
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document.write( "System to solve is this:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=2x%2B5y=84 ALIGN=MIDDLE  ALT=\"2x%2B5y=84\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x%2By=30 ALIGN=MIDDLE  ALT=\"x%2By=30\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "Possible next step is<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=2x%2B5y-2%28x%2By%29=84-2%2A30 ALIGN=MIDDLE  ALT=\"2x%2B5y-2%28x%2By%29=84-2%2A30\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=5y-2y=24 ALIGN=MIDDLE  ALT=\"5y-2y=24\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=3y=24 ALIGN=MIDDLE  ALT=\"3y=24\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=highlight%28y=8%29 ALIGN=MIDDLE  ALT=\"highlight%28y=8%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > liters for the 50% acid.\r<BR>\n" );
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document.write( "You can continue from here...\r<BR>\n" );
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document.write( "Also notice, if 30 liters mixture is to result, as described, then this must be some huge bottle containing the x liters of the other acid! </SPAN>\n" );
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