document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=620087>Question 620087</A>: <I><SPAN STYLE=\"word-break: break-all;\"> One pipe can fill a tank in 36 minutes, a second can fill it in 9 minutes, and a third can fill it in 12 minutes. If the tank is empty, how long will the three pipes, operating together, take to fill it?\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 #389898 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><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=389898\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\">  One pipe can fill a tank in 36 minutes, a second can fill it in 9 minutes, and a third can fill it in 12 minutes. If the tank is empty, how long will the three pipes, operating together, take to fill it? <BR>\n" );
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document.write( "The rates are 1/36 ; 1/9 ; 1/12<BR>\n" );
document.write( "Together rate is 1/x<BR>\n" );
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document.write( "Equation:<BR>\n" );
document.write( "(1/36) + (1/9) + (1/12) = 1/x<BR>\n" );
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document.write( "Multiply thru by 36x to get:<BR>\n" );
document.write( "x + 4x + 3x = 36<BR>\n" );
document.write( "8x = 36<BR>\n" );
document.write( "x = 4.5 minutes (time to do the job together)<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
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