document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1131119>Question 1131119</A>: <I><SPAN STYLE=\"word-break: break-all;\"> \"At noon, a pump is turned on to fill an empty pool. Normally, the pump would fill the pool in 12 hours, but at 12:00 P.M, a valve is accidentally opened that could drain a full pool in 20 hours. If the valve remains open, at what time will the pool be full?\"\r<BR>\n" );
document.write( "\n" );
document.write( "This was a question I had on my Algebra 2 test and I got punched in the face with this question..., I wasn't able to fill in the chart at all, but if I'm right the chart should be a rate x time = distance (work) chart. I really have no idea how to fill in the chart... </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #747728 by </B><A HREF=/tutors/aboutme.mpl?userid=josgarithmetic><B>josgarithmetic(39617)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=josgarithmetic><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=747728\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Pump Filling Rate     <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=1%2F12 ALIGN=MIDDLE  ALT=\"1%2F12\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
document.write( "\n" );
document.write( "valve FILLING Rate    <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=-1%2F20 ALIGN=MIDDLE  ALT=\"-1%2F20\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
document.write( "\n" );
document.write( "Pump&Valve Together    <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=1%2F12-1%2F20=%285%2F5%29%281%2F12%29-%283%2F3%29%281%2F20%29=2%2F60=1%2F30 ALIGN=MIDDLE  ALT=\"1%2F12-1%2F20=%285%2F5%29%281%2F12%29-%283%2F3%29%281%2F20%29=2%2F60=1%2F30\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "The combined filling rate for pump and valve together is ONE pool in 30  hours.<BR>\n" );
document.write( "Notice, the valve filling rate is NEGATIVE. </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );