document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=820649>Question 820649</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Two pumps of different sizes, working together, can empty a tank in 7 hours. The larger pump can empty the tank in 4 hours less than the smaller pump. If the larger pump is out of order, how long will it take the smaller pump to complete the job?<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 #496738 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=496738\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> 7/x+7/(x-4)=1<BR>\n" );
document.write( "1/53 (x-9)^2 = 1<BR>\n" );
document.write( "x = 1.7199<BR>\n" );
document.write( "x = 16.280<BR>\n" );
document.write( "It looks like there are two positive answers but remember that we must subtract 4 to get the smaller pumps time.<BR>\n" );
document.write( "x = 16.280<BR>\n" );
document.write( "x-4 = 12.280\r<BR>\n" );
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