Two pipes 'L' and 'K' together fill a tank in 4 hours. Pipe K alone fi – McqOptions

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1.	Two pipes 'L' and 'K' together fill a tank in 4 hours. Pipe K alone fills it in 5 hours. In how many hours will pipe L fill this tank alone?
A.	20 hours
B.	12 hours
C.	8 hours
D.	15 hours
Answer» B. 12 hours

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