document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=303510>Question 303510</A>: <I><SPAN STYLE=\"word-break: break-all;\"> initially, a tank contains 20 gallons of 30% antifreeze solution. how many gallans of 80% antifreeze solution should be added to the tank in order to have the concentration of the antifreeze in the tank increase 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 #217509 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=217509\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> You didn't say how big the tank is.<BR>\n" );
document.write( ".3*20+.8x=.5(20+x)<BR>\n" );
document.write( "6+.8x=10+.5x<BR>\n" );
document.write( ".3x=4<BR>\n" );
document.write( "x=4/.3<BR>\n" );
document.write( "x=40/3<BR>\n" );
document.write( "x=13 1/3 </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );