document.write( "Question 1163865: A large pipe can fill a tank 4 times as rapidly as a
\n" ); document.write( "small pipe. When both pipes are operating, they require
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\n" ); document.write( "pipe require to fill the tank operating alone? \n" ); document.write( "

Algebra.Com's Answer #788102 by ikleyn(52799) $\"\"$ $\"About$

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document.write( "When both pipes are operating, they are equivalent to 4+1 = 5 working small pipes.\r\n" );
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document.write( "Hence, 5 small pipes can fill the tank in 4 hours.\r\n" );
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document.write( "It means that one small pipe will do it in 4*5 = 20 hours.    ANSWER\r\n" );
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