Two pipes A and B can fill a tank in 15 minutes and 20 minutes respectively. Bot May 24, 2022 by admin ✪ Choose the correct option.Two pipes A and B can fill a tank in 15 minutes and 20 minutes respectively. Both the pipes are opened together but after 4 minutes, pipe A is turned off. What is the total time required to fill the tank?A. 10 min. 20 sec.B. 11 min. 45 sec.C. 12 min. 30 sec.D. 14 min. 40 sec. Submit Answer
