document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=495618>Question 495618</A>: <I><SPAN STYLE=\"word-break: break-all;\"> How many liters of pure water should be mixed with a 13-L solution of 90% acid to produce a mixture that is 70% water? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #336146 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=336146\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> How many liters of pure water should be mixed with a 13-L solution of 90% acid to produce a mixture that is 70% water?<BR>\n" );
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document.write( "70% water = 30% acid<BR>\n" );
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document.write( "13 liters of 90% acid has 12*0.9 = 11.7 liters of acid<BR>\n" );
document.write( "If 11.7 l is 30%, then the total solution = 11.7/0.3 = 39 liters<BR>\n" );
document.write( "39 - 13 = 26 liters of water to add<BR>\n" );
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