document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=724060>Question 724060</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Two inlet pipes can fill a water reservoir in 10 hours and 12 hours respectively when opened individually. If an outlet can empty the reservoir alone in 9 hours, how long will it take to fill the reservoir if all 3 pipes are opened simultaneously?\r<BR>\n" );
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document.write( "--THANKS </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #443569 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=443569\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Add their rates of filling and subtract the<BR>\n" );
document.write( "rate of emptying to get the rate of filling<BR>\n" );
document.write( "with all 3 pipes open.<BR>\n" );
document.write( "( 1 reservoir filled ) / ( 10 hrs ) + ( 1 reservoir filled ) / ( 12 hrs ) - ( 1 reservoir emptied ) / ( 9 hrs )<BR>\n" );
document.write( "= ( 1 reservoir filled / t hrs )<BR>\n" );
document.write( "--------------------------<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+1%2F10+%2B+1%2F12+-+1%2F9+=+1%2Ft+ ALIGN=MIDDLE  ALT=\"+1%2F10+%2B+1%2F12+-+1%2F9+=+1%2Ft+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "I'll multiply both sides by <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+360t+ ALIGN=MIDDLE  ALT=\"+360t+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+36t+%2B+30t+-+40t+=+360+ ALIGN=MIDDLE  ALT=\"+36t+%2B+30t+-+40t+=+360+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+26t+=+360+ ALIGN=MIDDLE  ALT=\"+26t+=+360+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+t+=+13.846+ ALIGN=MIDDLE  ALT=\"+t+=+13.846+\"   DISABLED_style= \"max-width:90%; height:auto;\" > hrs<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+.846%2A60+=+50.8+ ALIGN=MIDDLE  ALT=\"+.846%2A60+=+50.8+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "It will take 13 hrs and 51 min to fill the reservoir<BR>\n" );
document.write( "That's it unless there's a math error<BR>\n" );
document.write( "check:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+.1+%2B+.08333+-+.1111+=+1%2Ft+ ALIGN=MIDDLE  ALT=\"+.1+%2B+.08333+-+.1111+=+1%2Ft+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+.0722223+=+1%2Ft+ ALIGN=MIDDLE  ALT=\"+.0722223+=+1%2Ft+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+t+=+13.846+ ALIGN=MIDDLE  ALT=\"+t+=+13.846+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "OK\r<BR>\n" );
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document.write( " </SPAN>\n" );
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