document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=820313>Question 820313</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Please help me solve,\r<BR>\n" );
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document.write( "If tap A, B, C can fill a tank of water in 40 minutes, 30 Minutes, 60 Minutes respectively. How long will it take all of them to fill the same tank at once? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #493462 by </B><A HREF=/tutors/aboutme.mpl?userid=rothauserc><B>rothauserc(4718)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=rothauserc><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=rothauserc><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=493462\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Taps A in 40 minutes, B in 30 minutes, C in 60 minutes and together t minutes.<BR>\n" );
document.write( "completed in 1 minute are<BR>\n" );
document.write( "A in 1/40 minute, B in 1/30 minute, C in 1/60 minute and together 1/t minute<BR>\n" );
document.write( "now we can write<BR>\n" );
document.write( "1/40 + 1/30 + 1/60 = 1/t<BR>\n" );
document.write( "120 is common denominator<BR>\n" );
document.write( "3/120 + 4/120 + 2/120 = 1/t<BR>\n" );
document.write( "9/120 = 1/t<BR>\n" );
document.write( "t = 120/9 = 13.3 minutes<BR>\n" );
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