document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=227284>Question 227284</A>: <I><SPAN STYLE=\"word-break: break-all;\"> How many millimeters of pure acid must be added to 120 milliliters of a 30% acid solution to obtain a 50% solution? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #168954 by </B><A HREF=/tutors/aboutme.mpl?userid=checkley77><B>checkley77(12844)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=checkley77><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=168954\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> .30*120+x=.50(120+x)<BR>\n" );
document.write( "36+x=60+.5x<BR>\n" );
document.write( "x-.5x=60-36<BR>\n" );
document.write( ".5x=24<BR>\n" );
document.write( "x=24/.5<BR>\n" );
document.write( "x=48 ml of pure acid is used.<BR>\n" );
document.write( "Proof:<BR>\n" );
document.write( ".30*120+48=.5(120+48)<BR>\n" );
document.write( "36+48=.5*168<BR>\n" );
document.write( "84=84 </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );