document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=909513>Question 909513</A>: <I><SPAN STYLE=\"word-break: break-all;\"> An inlet pipe on a swimming pool can be used to fill the pool in 25 hours. the drain pipe can be used to empty the pool in 30 hours. if the pool is 1/3 filled and then the inlet pipe and drain pipe are opened, how long from that time will it take to fill the pool. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #551883 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><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=551883\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> An inlet pipe on a swimming pool can be used to fill the pool in 25 hours. the drain pipe can be used to empty the pool in 30 hours. if the pool is 1/3 filled and then the inlet pipe and drain pipe are opened, how long from that time will it take to fill the pool.<BR>\n" );
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document.write( "Fill Rate:: 1/25 job/hr<BR>\n" );
document.write( "Empty Rate:: 1/30 job/hr<BR>\n" );
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document.write( "Combined Rate:: (1/25)-(1/30) = 5/(25*30) = 1/(5*30) = 1/150 job/hr<BR>\n" );
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document.write( "Equation:<BR>\n" );
document.write( "rate*time = work done<BR>\n" );
document.write( "(1/150)x = 2/3 job<BR>\n" );
document.write( "----<BR>\n" );
document.write( "x = 100 hrs (time to fill (2/3) of the pool.<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
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