document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=899683>Question 899683</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A chemist has 50ml of a solution with 20% concentration of acid. How many ml of pure acid must be added to increase the concentration to 30%? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #545551 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=545551\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> 1*x+0.2*50=0.3(50+x)<BR>\n" );
document.write( "1*x+10=15+0.3x<BR>\n" );
document.write( "1x-0.3x=15-10<BR>\n" );
document.write( "0.7x=5<BR>\n" );
document.write( "x=7.14285714<BR>\n" );
document.write( "check<BR>\n" );
document.write( "1*7.14285714+0.2*50=0.3(50+7.14285714)<BR>\n" );
document.write( "7.14285714+10=0.3(57.1428571)<BR>\n" );
document.write( "17.1428571=17.1428571<BR>\n" );
document.write( "ok<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );