document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=550049>Question 550049</A>: <I><SPAN STYLE=\"word-break: break-all;\"> outt of three pipes Ist and 2nd opened opened tank filled in 12 mts Ist and IIIrd took 20 mts. How much time takes if all three are opened?\r<BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #358414 by </B><A HREF=/tutors/aboutme.mpl?userid=mathstutor458><B>mathstutor458(57)</B></A><img src=\"/images/stars/stars-08.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=mathstutor458><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/images/nopicture.jpg><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=358414\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> 1st and 2nd pipes fills the tank in 12mts.So, the work done by 1st and 2nd pipes are 1/12.<BR>\n" );
document.write( "3rd pipe took 20mts.So,work done by 3rd pipe in one mt is 1/20.<BR>\n" );
document.write( "if all three are opened together then work done in 1mt=1/12 + 1/20=2/15<BR>\n" );
document.write( "Time=1/workdone in 1mt(here)<BR>\n" );
document.write( "Therefore, time taken=1/(2/15)=15/2= 7 1/2<BR>\n" );
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