Question

Three taps A, B & C are connected to a tank either to fill or empty the tank. All three together can fill the tank in 8 minute whereas only A & B can fill it in 12 min. In a particular day all the three taps are used to fill the tank, they all are opened for 4 min, then A is closed, remaining 2 works for next 2 min then B is closed. Finally C fill the tank in 1 min. In how much time B alone can fill the tank.

Answer 1

48/9 minutes is the answer