document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1140378>Question 1140378</A>: <I><SPAN STYLE=\"word-break: break-all;\"> It takes an older pump four times as long to drain a certain pool as it does a newer pump.  Working together it takes the two pumps three hours to drain the pool .  How long will it take the newer pump to drain the pool working alone? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #760885 by </B><A HREF=/tutors/aboutme.mpl?userid=Boreal><B>Boreal(15235)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Boreal><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=Boreal><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=760885\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> newer pump takes x hours<BR>\n" );
document.write( "older pump takes 4x hours<BR>\n" );
document.write( "in 1 hour they drain (1/x) and (1/4x) respectively.<BR>\n" );
document.write( "(3/x)+(3/4x)=1 full pool drained.<BR>\n" );
document.write( "multiply by 4x<BR>\n" );
document.write( "12+3=4x<BR>\n" );
document.write( "x=(15/4) hours or 3.75 hours for new pump<BR>\n" );
document.write( "in 3 hours, it drains 3/3.75 of the pool or 80%<BR>\n" );
document.write( "the other pump drains 20% in that time </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );