document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=338654>Question 338654</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A barrel contains 30 gallons of 40% antifreeze. How many gallons of an 80% antifreeze solution should be added to make the barrel contain 50% antifreeze? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #242753 by </B><A HREF=/tutors/aboutme.mpl?userid=nerdybill><B>nerdybill(7384)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=nerdybill><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=nerdybill><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=242753\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> A barrel contains 30 gallons of 40% antifreeze. How many gallons of an 80% antifreeze solution should be added to make the barrel contain 50% antifreeze?<BR>\n" );
document.write( ".<BR>\n" );
document.write( "Let x = gallons of 80% antifreeze added<BR>\n" );
document.write( "then<BR>\n" );
document.write( ".40(30) + .80x = .50(30+x)<BR>\n" );
document.write( "12 + .80x = 15 + .50x<BR>\n" );
document.write( "12 + .30x = 15<BR>\n" );
document.write( ".30x = 3<BR>\n" );
document.write( "x = 10 gallons<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );