document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=862967>Question 862967</A>: <I><SPAN STYLE=\"word-break: break-all;\"> How many liters of water should be added to 20 L of a 30% acid solution to make a solution that is 10% acid? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #520101 by </B><A HREF=/tutors/aboutme.mpl?userid=Alan3354><B>Alan3354(69443)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Alan3354><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/cgi-bin/show-face.mpl?user=Alan3354><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=520101\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Do it like this one.<BR>\n" );
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document.write( "If I have a 25 mil test tube of 72% nitric acid and I want to reduce the concentration to 42%, how much water would I need to add ? <BR>\n" );
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document.write( "w = ml of water<BR>\n" );
document.write( "25*72 + 0*w = (25+w)*42<BR>\n" );
document.write( "1800 = 42w + 1050<BR>\n" );
document.write( "42w = 750<BR>\n" );
document.write( "w = 125/7 ml<BR>\n" );
document.write( "=~ 17.86 ml<BR>\n" );
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document.write( "This is safe on paper.<BR>\n" );
document.write( "If it's real liquids, add the acid to the water, not the water to the acid.<BR>\n" );
document.write( "And don't drink any.  </SPAN>\n" );
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