Taps A and B can fill a tank in 2 and 8 hours, respectively. Tap C can empty the filled tank in 4 hours. If all the three taps are turned on simultaneously, how much time will it take to fill the tank completely?

Taps A and B can fill a tank in 2 and 8 hours, respectively. Tap C can

1.	Taps A and B can fill a tank in 2 and 8 hours, respectively. Tap C can empty the filled tank in 4 hours. If all the three taps are turned on simultaneously, how much time will it take to fill the tank completely?
A.	3 hours
B.	9/2 hours
C.	3/8 hours
D.	8/3 hours
Answer» E.