document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=279509>Question 279509</A>: <I><SPAN STYLE=\"word-break: break-all;\"> An inlet pipe on a swimming pool can be used to fill the pool in 23 hours. The drain pipe can be used to empty the pool in 24 hours. If the pool is 1/4 filled and then the inlet pipe and drain pipe are opened, how long from that time will it take to fill the pool? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #203186 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=203186\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> An inlet pipe on a swimming pool can be used to fill the pool in 23 hours. The drain pipe can be used to empty the pool in 24 hours. If the pool is 1/4 filled and then the inlet pipe and drain pipe are opened, how long from that time will it take to fill the pool?\r<BR>\n" );
document.write( "\n" );
document.write( "the inlet does 1/23 of the job in 1 hour\r<BR>\n" );
document.write( "\n" );
document.write( "the drainpipe does 1/24 job in 1 hour\r<BR>\n" );
document.write( "\n" );
document.write( "Effectively if both are open then 1/23 - 1/24 job is done in 1 hour\r<BR>\n" );
document.write( "\n" );
document.write( "1/ 23*24 job will be done in 1 hour\r<BR>\n" );
document.write( "\n" );
document.write( "the pool is 1/4 full so 3/4 empty. So to complete 3/4 of the job it will take\r<BR>\n" );
document.write( "\n" );
document.write( "(3/4) /  (1/ 23*24)  \r<BR>\n" );
document.write( "\n" );
document.write( "= 414 hours </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );