A: Pipe A is half as fast as pipe B and pipe B is half as fast as pipe C, so the pipe A alone will take 10 - 5 = 5 hours to fill the tank. The answer is (C).
Answer the following multiple choice question with options (a), (b), (c), (d), (e) by reasoning step-by-step.
Q:A tank is filled in 10 hours by three pipes A, B and C. The pipe C is twice as fast as B and B is twice as fast as A. How much time will pipe A alone take to fill the tank? Answer Choices: A)30 hours B)35 hours C)70 hours D)50 hours E)58hours