document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=206409>Question 206409</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Two pumps are used to fill a water storage tank at a resort. One pump can fill the tank by itself in 9 hours, and the other can fill it in 6 hours. How long will it take both pumps operating together to fill the tank? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #156110 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=156110\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Two pumps are used to fill a water storage tank at a resort. One pump can fill the tank by itself in 9 hours, and the other can fill it in 6 hours. How long will it take both pumps operating together to fill the tank?<BR>\n" );
document.write( "-------------------------------------------------------------------<BR>\n" );
document.write( "1st pump DATA:<BR>\n" );
document.write( "time = 9 hr/job ; rate = (1/9) job/hr<BR>\n" );
document.write( "-----------------------------------------<BR>\n" );
document.write( "2nd pump DATA:<BR>\n" );
document.write( "time = 6 hr/job ; rate = 1/6 job/hr<BR>\n" );
document.write( "------------------------------------------<BR>\n" );
document.write( "Together DATA:<BR>\n" );
document.write( "time = x hr/job ; rate = 1/x job/hr<BR>\n" );
document.write( "-------------------------------------------<BR>\n" );
document.write( "Equation:<BR>\n" );
document.write( "rate + rate = together rate<BR>\n" );
document.write( "(1/9) + (1/6) = 1/x<BR>\n" );
document.write( "2x + 3x = 18<BR>\n" );
document.write( "5x = 18<BR>\n" );
document.write( "x = 18/5 = 3.6 hrs (time required when both pumps are operating)<BR>\n" );
document.write( "======================================================================<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H.           </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );