document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=777946>Question 777946</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A cistern can be filled in 9 hours but it takes 10 hours due to a leak in its bottom.If the cistern full,then the time the tank leak will take to empty it is </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #474348 by </B><A HREF=/tutors/aboutme.mpl?userid=josmiceli><B>josmiceli(19441)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=josmiceli><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=josmiceli><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=474348\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> The rate of filling is:<BR>\n" );
document.write( "( 1 tank ) / ( 9 hrs )<BR>\n" );
document.write( "Let <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+-R+ ALIGN=MIDDLE  ALT=\"+-R+\"   DISABLED_style= \"max-width:90%; height:auto;\" > = the rate that the leak empties the tank<BR>\n" );
document.write( "------------------<BR>\n" );
document.write( "Starting with an empty tank, add the rates to get<BR>\n" );
document.write( "the total rate needed to fill the tank<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+1%2F9+-+R+=+1%2F10+ ALIGN=MIDDLE  ALT=\"+1%2F9+-+R+=+1%2F10+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "------------------<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+R+=+1%2F9+-+1%2F10+ ALIGN=MIDDLE  ALT=\"+R+=+1%2F9+-+1%2F10+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+R+=+10%2F90+-+9%2F90+ ALIGN=MIDDLE  ALT=\"+R+=+10%2F90+-+9%2F90+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+R+=+1%2F90+ ALIGN=MIDDLE  ALT=\"+R+=+1%2F90+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "The rate of leaking is ( 1 tank ) / ( 90 hrs )<BR>\n" );
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document.write( "So, if the tank is full, the tank will empty in 90 hrs\r<BR>\n" );
document.write( "\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );