document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1152252>Question 1152252</A>: <I><SPAN STYLE=\"word-break: break-all;\"> It takes an older pump  3 times as long to drain a certain pool as it does a newer pump. Working together, it takes the two pumps 9 hours to drain the pool. How long will it take the older pump to drain the pool working alone? </SPAN>\n" );
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document.write( "Since it takes the older pump 3 times as long as the newer pump to drain the pool, when working together the newer pump does 3/4 of the work and the older pump does 1/4.<br><BR>\n" );
document.write( "Then, since the older pump drains 1/4 of the pool in those 9 hours when the pumps are both working, it will take the older pump 4*9 = 36 hours to drain the pool alone.<br><BR>\n" );
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