document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1042459>Question 1042459</A>: <I><SPAN STYLE=\"word-break: break-all;\"> One pump can fill a swimming pool in 8 hours and another pump can fill it in 10 hours. If both pumps are opened at the same time, how many hours will it take to fill the pool?<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 #657424 by </B><A HREF=/tutors/aboutme.mpl?userid=rothauserc><B>rothauserc(4718)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=rothauserc><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=rothauserc><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=657424\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Let x be the amount of time it takes to fill the pool with both pumps working together, then<BR>\n" );
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document.write( "(1/8) + (1/10) = (1/x)<BR>\n" );
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document.write( "represents amount of pool filled in an hour working together<BR>\n" );
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document.write( "(5/40) + (4/40) = (1/x)<BR>\n" );
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document.write( "9/40 = 1/x<BR>\n" );
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document.write( "9x = 40<BR>\n" );
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document.write( "x = 4.44444 approx 4.4 hours<BR>\n" );
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document.write( "it will take 4.4 hours to fill the pool<BR>\n" );
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