document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=425549>Question 425549</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A chemist has 100 milliliters of a solution that contains a 20% concentration of acid.  How many milliliters of pure acid must be added in order to increase the concentration of the solution to 50%? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #296275 by </B><A HREF=/tutors/aboutme.mpl?userid=mananth><B>mananth(16946)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=mananth><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=mananth><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=296275\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> -------------	percent	----------------quantity		<BR>\n" );
document.write( "acid solution	20	----------------100<BR>\n" );
document.write( "pure acid	100	----------------x<BR>\n" );
document.write( "Total	50	----------------	100+x<BR>\n" );
document.write( "............<BR>\n" );
document.write( "20*100+100*x=50(100+x)<BR>\n" );
document.write( "										<BR>\n" );
document.write( "2000+100x=5000+50x					<BR>\n" );
document.write( "100x-50x=5000-2000					<BR>\n" );
document.write( "50x=3000<BR>\n" );
document.write( "/50									<BR>\n" );
document.write( "x= 60	ml	100%acid solution						<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );