document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=907631>Question 907631</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A radiator contains 8 liters of 40% antifreeze solution. How many liters of pure antifreeze must be added 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 #550500 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=550500\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> We have 8 liter of 40% antifreeze<BR>\n" );
document.write( "We want to add some 100% antifreeze to make   50% antifreeze<BR>\n" );
document.write( "1*x+0.4*8=0.5(8+x)<BR>\n" );
document.write( "1*x+3.2=4+0.5x<BR>\n" );
document.write( "1x-0.5x=4-3.2<BR>\n" );
document.write( "0.5x=0.8<BR>\n" );
document.write( "x=1.6 liter at 100% (1.6) is added to 8 liter at 40%(3.2) to make 50% of 9.6 liter(4.8)<BR>\n" );
document.write( "check<BR>\n" );
document.write( "1*1.6+0.4*8=0.5(8+1.6)<BR>\n" );
document.write( "1.6+3.2=0.5(9.6)<BR>\n" );
document.write( "4.8=4.8<BR>\n" );
document.write( "ok<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );