document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=904086>Question 904086</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A large pump takes only 6 hours to fill a pool while a smaller pump takes 9 hours by itself to fill the same pool. How long will it take to fill the pool if both pumps work together? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #548529 by </B><A HREF=/tutors/aboutme.mpl?userid=richwmiller><B>richwmiller(17219)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=richwmiller><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=richwmiller><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=548529\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> a=6<BR>\n" );
document.write( "b=9<BR>\n" );
document.write( "1/a+1/b=1/x<BR>\n" );
document.write( "1/6+1/9=1/x<BR>\n" );
document.write( "1/6+1/9=1/3.6<BR>\n" );
document.write( "1/x=1/3.6<BR>\n" );
document.write( "x=3.6 hours working together<BR>\n" );
document.write( "check<BR>\n" );
document.write( "1/a+1/b=1/x<BR>\n" );
document.write( "1/6+1/9=1/x<BR>\n" );
document.write( "9/54+6/54=1/x<BR>\n" );
document.write( "15/54=1/x<BR>\n" );
document.write( "54/15=x<BR>\n" );
document.write( "x=3.6 hours working together<BR>\n" );
document.write( "ok<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );