Three taps A, B and C can fill a tank in 27, 36 and 54 minutes respectively. If all the three taps are opened, then how much time (in minutes) it will take to completely fill the tank?
1
16
2
12
3
10
4
15
Three taps A, B and C can fill a tank in 27, 36 and 54 minutes respectively. If all the three taps are opened, then how much time (in minutes) it will take to completely fill the tank?