Question

If tap A can fill a tank in 2 h, tap B can fill the same tank in 3 h and tap C can empty a tank in 9 h, how long after all of them are opened together will the tank be full?​

Answer 1

Answer:

18/13 hr

Step-by-step explanation:

Pipe Time Taken Efficiency

A 2 9

B 3 6

C -9 -2

Total Work= 18

Efficiency=9+6-2=13

Time Taken= 18/13 hr