document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=937611>Question 937611</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A tank can be filled by one pipe in 45 minutes and by another pipe in 55 minutes. How long would it take both to fill it ?<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 #571003 by </B><A HREF=/tutors/aboutme.mpl?userid=TimothyLamb><B>TimothyLamb(4379)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=TimothyLamb><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=TimothyLamb><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=571003\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> r = w/t<BR>\n" );
document.write( "rates are additive:<BR>\n" );
document.write( "r = 1/45 + 1/55<BR>\n" );
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document.write( "t = w/r<BR>\n" );
document.write( "t = 1/(1/45 + 1/55)<BR>\n" );
document.write( "t = 24.75 minutes<BR>\n" );
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