Question

How long will it take for two pipes A and B to fill an empty cistern if they worked alternately for an hour each ?

A. Working alone, Pipe A can fill the cistern in 40 hours
B. 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 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 ?

A. Working alone, Pipe A can fill the cistern in 40 hours
B. 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

=> Option C is the correct answer

Answer 2

Hello mate


here's your answer

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Option C✔✔

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Hope it helps you