document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=14588>Question 14588</A>: <I><SPAN STYLE=\"word-break: break-all;\"> ive really got some great help from this site, however i just cant find the right problem to help with this one..thanks\r<BR>\n" );
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document.write( "the inlet pipe of an oil tank can fill the tank in 1 hour 30 minutes.  the outlet pipe can empty the tank in 1 hour.  find how long it takes to empty a full tank if both pipes are open.\r<BR>\n" );
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document.write( "im guessing i have to convert into minutes instead of hours ...with 1/90 +1/60 = 180  the answer i get is 32 hours..is this right.. thanks to anyone who can help   </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #7272 by </B><A HREF=/tutors/aboutme.mpl?userid=Earlsdon><B>Earlsdon(6294)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Earlsdon><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=7272\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Find the hourly rates of the inlet pipe and the outlet pipe..\r<BR>\n" );
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document.write( "If the inlet pipe can fill the tank in 1 hour 30 mins. (3/2 hour), then it can fill 2/3 of the tank in 1 hour.<BR>\n" );
document.write( "The outlet pipe can empty the tank in 1 hour (2/2 hour = 3/3 hour).\r<BR>\n" );
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document.write( "Together, inlet rate - outlet rate = 2/3 - 3/3 = -1/3 hour.  So the tank is emptying (-) at the rate of 1/3 of the tank per hour.\r<BR>\n" );
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document.write( "So, it will take 3 hours to completely empty the tank.   </SPAN>\n" );
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