document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=521471>Question 521471</A>: <I><SPAN STYLE=\"word-break: break-all;\"> You need a 80% alcohol solution. On hand, you have a 320 mL of a 85% alcohol mixture. How much pure water will you need to add to obtain the desired solution?\r<BR>\n" );
document.write( "\n" );
document.write( "You will need <BR>\n" );
document.write( " mL of pure water <BR>\n" );
document.write( "to obtain <BR>\n" );
document.write( " mL of the desired 80% solution. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #346492 by </B><A HREF=/tutors/aboutme.mpl?userid=richwmiller><B>richwmiller(17219)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=richwmiller><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=richwmiller><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=346492\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> from the view of water<BR>\n" );
document.write( "320*.15+w=(320+w)*.20<BR>\n" );
document.write( "w=20 ml of water\r<BR>\n" );
document.write( "\n" );
document.write( "from the view of alcohol<BR>\n" );
document.write( ".85*320=.80*(320+w)<BR>\n" );
document.write( "w=20 ml of water<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );