document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=489598>Question 489598</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Pipe A can fill in 20 minutes and Pipe B in 30 mins<BR>\n" );
document.write( "and Pipe C can<BR>\n" );
document.write( "empty the same in 40 mins.If all of them work<BR>\n" );
document.write( "together, find the time<BR>\n" );
document.write( "taken to fill the tank </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #333706 by </B><A HREF=/tutors/aboutme.mpl?userid=mananth><B>mananth(16946)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=mananth><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=mananth><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=333706\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Emptying the pool is one job		1 job					<BR>\n" );
document.write( "Pipe I  	20	minutes					<BR>\n" );
document.write( "She does	  1/20	job in 1	hour				<BR>\n" );
document.write( "Pipe II 	30	minutes					  1/12<BR>\n" );
document.write( "He does 	  1/30	of thejob in 1 	hour				<BR>\n" );
document.write( "Pipe III	40	minutes					<BR>\n" );
document.write( "It does 	  1/40	of the job in 1 	hour				<BR>\n" );
document.write( "							<BR>\n" );
document.write( "Together they will do 		  1/20	+	  1/30	+	  1/40	<BR>\n" );
document.write( "Together they will do 		  9/83		of the job in one 		minute	0.11<BR>\n" );
document.write( "So they will take 		9 2/9	minutes				<BR>\n" );
document.write( "So they will take 		9.23	minutes				<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );