document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=428523>Question 428523</A>: <I><SPAN STYLE=\"word-break: break-all;\"> One pump can empty a pool in 5 days, whereas a second pump can empty the pool in 7 days.  How long will it take the two pumps, working together, to empty the pool?<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #297827 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=297827\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Emptying the tank is one job						<BR>\n" );
document.write( "one pipe drains in	5	days				<BR>\n" );
document.write( "It does 	  1/ 5	of the job in 1 	day 			<BR>\n" );
document.write( "other pipe	7	day 				<BR>\n" );
document.write( "It does 	  1/ 7	of thejob in 1 	day 			<BR>\n" );
document.write( "Together they will do  1/5+  1/ 7		<BR>\n" );
document.write( "Together they will do  12/35 of the job in one day <BR>\n" );
document.write( "So they will take 2 8/9	days			<BR>\n" );
document.write( "So they will take 2.92	days			<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );