Question

Taps A and B can fill a tank in 4 hours and 6 hours respectively and tap C (at the bottom) can empty it in 12 hrs. If all the 3 taps are opened together when the tank is empty, find after how many hours the tank will 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 after 1 hour the portion of the tank that will be full is...

1/4 +1/6 - 1/12 = 4/12

4/12 is also equal to 1/3.

So therefore it will take 3 hours for the tank to be full.

HOPE THIS HELPS YOU...

Answer 2

Answer:

3 hours. ..

Step-by-step explanation: