A: A alone will fill the tank in 10 hours, if C is twice as fast as B and B is twice as fast as A. Thus, C fills the tank in 10 - 2 = 8 hours. A alone will fill the tank in 8 - 2 = 4 hours. 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