Question

There are 3 pipes in a tank. If first pipe is opened the tank is filled in one hour. If second pipe is opened the tank is filled in seventy five minutes. If third pipe is opened the tank is filled in fifty minutes. If all the three pipes are opened simultaneously, the tank is filled in :

• A. 32
• B. 29
• C. 20
• D. 25

Answer 1

Answer:

C. 20