document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=329008>Question 329008</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A water tank has an inlet pipe and a drain pipe. A full tank can be emptied in 30 minutes if the drain is opened and an empty tank can be filled in 45 minutes with the inlet pipe opened. If both pipes are accidentally opened when the tank is full, then how long will it take to empty the tank? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #235725 by </B><A HREF=/tutors/aboutme.mpl?userid=scott8148><B>scott8148(6628)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=scott8148><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=scott8148><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=235725\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> it takes 30 min to drain the volume of the tank<BR>\n" );
document.write( "___ during that time , 2/3 of the volume is replaced by the fill pipe\r<BR>\n" );
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document.write( "so the net result is that 1/3 of the tank is drained in 30 min\r<BR>\n" );
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document.write( "this means that it takes 90 min for the tank to empty , with both pipes open </SPAN>\n" );
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