document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=900837>Question 900837</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A winery has a vat with two pipes leading to it. The inlet pipe can fill the vat in 3 hours, while the outlet pipe can empty it in 7 hours. How long will it take to fill the Vat with both pipes are left open?  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #546196 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=546196\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> 1/3-1/7=1/x<BR>\n" );
document.write( "7/21-3/21=1/x<BR>\n" );
document.write( "4/21=1/x<BR>\n" );
document.write( "x=21/4=5.25 hours </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );