document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=944485>Question 944485</A>: <I><SPAN STYLE=\"word-break: break-all;\"> pipe A fills a certain swimming pool in 5 hours. Pipe B fills the swimming pool in 3 hours and Pipe C drains it in 10 hours. Pipe A and Pipe B were turned on to fill the swimming pool but pipe C was accidentally left open. How long will it take for Pipe A and Pipe B to fill the swimming pool while Pipe C was left open? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #575888 by </B><A HREF=/tutors/aboutme.mpl?userid=macston><B>macston(5194)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=macston><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=macston><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=575888\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Pipe A fills 1pool/5hrs=1/5 pool/hr<BR>\n" );
document.write( "Pipe B fills 1pool/3hrs=1/3 pool/hr<BR>\n" );
document.write( "Pipe C fills -1 pool/10 hrs=-1/10 pool/hr<BR>\n" );
document.write( "With all three open:<BR>\n" );
document.write( "Pipe A + Pipe B + Pipe C=1/5+1/3-1/10=6/30+10/30-3/30=13/30 pool per hour<BR>\n" );
document.write( "The pool fills at a rate of 13/30 of the pool per hour with all pipes open<BR>\n" );
document.write( "A t this rate 1 pool takes 1pool/(13/30)pool/hr=2.3 hrs<BR>\n" );
document.write( "ANSWER it takes 2.3 hours to fill the pool with all pipes open </SPAN>\n" );
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