Question

Taps A and B can fill a tank in 2 hours and 4 hours,
respectively, and tap C can empty it in 12 hours. If all the
three taps are opened together when the tank is empty,
after how many hours will the tank be full?​

Answer 1

Answer:

In one hour Tap A can fill 1/4 the tank,Tap B can fill 1/6 the tank. Tap C can empty 1/12 tank in one hour. ... So therefore it will take 3 hours for the tank to be full.

Step-by-step explanation:

hope it's understandable