document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=917496>Question 917496</A>: <I><SPAN STYLE=\"word-break: break-all;\"> pump a can fill a tank in 3 hours Pump b can empty the same tank in 9 hours what time will the tank be full if you begin both pups at 9:30 am? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #556686 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=556686\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> 1/a+1/b=1/x<BR>\n" );
document.write( "1/3+1/-9=1/x<BR>\n" );
document.write( "-9/-27+3/-27=1/x<BR>\n" );
document.write( "-6/-27=1/x<BR>\n" );
document.write( "x=-27/-6<BR>\n" );
document.write( "x=4.5 hours working together<BR>\n" );
document.write( "Add 4:30 to 9:30<BR>\n" );
document.write( " 4:30 <BR>\n" );
document.write( "+9:30<BR>\n" );
document.write( "13:60<BR>\n" );
document.write( "14:00=2 pm<BR>\n" );
document.write( "check<BR>\n" );
document.write( "x/a+x/b=1<BR>\n" );
document.write( "x/3+x/-9=1<BR>\n" );
document.write( "4.5/3+4.5/-9=1<BR>\n" );
document.write( "1.5+-0.5=1<BR>\n" );
document.write( "1.0=1<BR>\n" );
document.write( "ok<BR>\n" );
document.write( "codewt<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );