document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=189865>Question 189865</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Please help...<BR>\n" );
document.write( "A swimming pool holds 540,000 liters of water. The pool has two drainage pipes. When the pool is completely full, the first pipe alone can empty in 150 minutes and the second pipe alone can empty in 225 minutes. Then both pipes are draining together, how long does it take them to empty the pool? _______minutes.  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #142464 by </B><A HREF=/tutors/aboutme.mpl?userid=ptaylor><B>ptaylor(2198)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=ptaylor><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=ptaylor><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=142464\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Let x=amount of time it takes both pipes draining together to empty the pool\r<BR>\n" );
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document.write( "First pipe empties at the rate of 540,000/150=3600 liters/min<BR>\n" );
document.write( "Second pipe empties at the rate of 540,000/225=2400 liters/min\r<BR>\n" );
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document.write( "Together, both pipes empties at the rate of 3600+2400=6000 liters/min, so our equation to solve is:\r<BR>\n" );
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document.write( "6000*x=540000\r<BR>\n" );
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document.write( "x=90 min------------------ans<BR>\n" );
document.write( "CK<BR>\n" );
document.write( "90*3600+90*2400=540000\r<BR>\n" );
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document.write( "324000+216000=540000<BR>\n" );
document.write( "540000=540000\r<BR>\n" );
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document.write( "Hope this helps---ptaylor<BR>\n" );
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