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Pipe A can fill a cistern in 6 hours and pipe B can fill it in 8 hours. Both the pipes are opened simultaneously, but after two hours, pipe A is closed. How many hours will B take to fill the remaining part of the cistern ?

A2 hrs

B3 hrs

C3 1/3 hrs

D2 2/3 hrs

Answer:

C. 3 1/3 hrs


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