document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=156527>Question 156527</A>: <I><SPAN STYLE=\"word-break: break-all;\"> What quantity of 70 per cent acid solution must be mixed with a 20 percent solution to produce 700 mL of a 50 per cent solution? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #115355 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=115355\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> .7X+.2(700-X)=.5*700<BR>\n" );
document.write( ".7X+140-.2X=350<BR>\n" );
document.write( ".5X=350-140<BR>\n" );
document.write( ".5X=210<BR>\n" );
document.write( "X=210/.5<BR>\n" );
document.write( "X=420 mL OF 70% IS USED.<BR>\n" );
document.write( "700-420=280 mL of 20% is used.<BR>\n" );
document.write( "Proof:<BR>\n" );
document.write( ".7*420+.2*280=.5*700<BR>\n" );
document.write( "294+56=350<BR>\n" );
document.write( "350=350<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );