document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1068603>Question 1068603</A>: <I><SPAN STYLE=\"word-break: break-all;\"> \r<BR>\n" );
document.write( "<BR>\n" );
document.write( "<BR>\n" );
document.write( "<BR>\n" );
document.write( "<BR>\n" );
document.write( "<BR>\n" );
document.write( "<BR>\n" );
document.write( "<BR>\n" );
document.write( "<BR>\n" );
document.write( "<BR>\n" );
document.write( "<BR>\n" );
document.write( "<BR>\n" );
document.write( "<BR>\n" );
document.write( "<BR>\n" );
document.write( "<BR>\n" );
document.write( "<BR>\n" );
document.write( "<BR>\n" );
document.write( "<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "Item 20<BR>\n" );
document.write( "A chemist has 0.2 liters of an acid solution whose acid concentration is 65%. How many liters of pure water should be added to lower the concentration 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 #683823 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><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/images/nopicture.jpg><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=683823\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Item 20<BR>\n" );
document.write( "A chemist has 0.2 liters of an acid solution whose acid concentration is 65%. How many liters of pure water should be added to lower the concentration to 50%? <BR>\n" );
document.write( "----------------<BR>\n" );
document.write( "Equation:<BR>\n" );
document.write( "acid + acid = acid<BR>\n" );
document.write( "0.65*0.2 + 0*x = 0.50(0.2+x)<BR>\n" );
document.write( "------------------------------<BR>\n" );
document.write( "65*0.2 + 0 = 50*0.2 + 50x<BR>\n" );
document.write( "15*0.2 = 50x<BR>\n" );
document.write( "x = 0.3*0.2<BR>\n" );
document.write( "x = 0.06 liters (amt of pure water to add)<BR>\n" );
document.write( "-------------<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
document.write( "---------- </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );