document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=52501>Question 52501</A>: <I><SPAN STYLE=\"word-break: break-all;\"> With only the small valve open, all of the liquid can be drained from a large vat in 4 hours.  With only the large valve open, all of the liquid can be drained from the same vat in 2 hours.  How long would it take to drain the vat with both valves open? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #35047 by </B><A HREF=/tutors/aboutme.mpl?userid=Nate><B>Nate(3500)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Nate><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=35047\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Rate of small valve: 1/4<BR>\n" );
document.write( "Rate of large valve: 1/2<BR>\n" );
document.write( "Rate * Time = Work<BR>\n" );
document.write( "t/4 + t/2 = 1<BR>\n" );
document.write( "4t/4 + 4t/2 = 4<BR>\n" );
document.write( "t + 2t = 4<BR>\n" );
document.write( "3t = 4<BR>\n" );
document.write( "t = 4/3<BR>\n" );
document.write( "1 hour and 20 minutes </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );