How long will it take for two pipes A and B to fill an empty cistern if they worked alternately for an hour each ?_x005F_x000D_ A. Working alone, Pipe A can fill the cistern in 40 hoursB. Pipe B is one third as efficient as Pipe A

Both (A) and (B) are sufficient

How long will it take for two pipes A and B to fill an empty cistern i

1.	How long will it take for two pipes A and B to fill an empty cistern if they worked alternately for an hour each ?_x005F_x000D_ A. Working alone, Pipe A can fill the cistern in 40 hoursB. Pipe B is one third as efficient as Pipe A
A.	Only A is sufficient
B.	Only B is sufficient
C.	Both (A) and (B) are sufficient
D.	None
Answer» D. None

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How long will it take for two pipes A and B to fill an empty cistern if they worked alternately for an hour each ?_x005F_x000D_ A. Working alone, Pipe A can fill the cistern in 40 hoursB. Pipe B is one third as efficient as Pipe A

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