document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=828199>Question 828199</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A pipe can fill a water tank at X hours. Another pipe can fill a water tank at Y hours. If both pipe are used to fill the tank, how many hours would it take? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #499135 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=499135\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> A pipe can fill a water tank at X hours. Another pipe can fill a water tank at Y hours. If both pipe are used to fill the tank, how many hours would it take?<BR>\n" );
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document.write( "1st pipe rate: 1/x job/hr<BR>\n" );
document.write( "2nd pipe rate: 1/y job/hr<BR>\n" );
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document.write( "Together rate = 1/x+1/y = (x+y)/xy job/hr<BR>\n" );
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document.write( "Together time = xy/(x+y) hours/job<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
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