311. A tank is filled in 5 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? September 23, 2025 by Admin A. 20 hrs B. 25 hrs C. 35 hrs D. Cannot be determined ✅ The correct answer is option C. 35 hrs.
