A total of 7 inlet and outlet pipes are fitted to a tank. Each inlet pipe can fill the tank (when empty) in 24 hours. Each outlet pipe can empty the tank (when full) in 36 hours. If all the pipes are opened simultaneously, the tank which is initially empty will be filled in 12 hours. The number of inlet pipes fitted to the tank is _____.

A pipe can fill a tank in 3 hours. There are two outlet pipes from the tank which can empty it in 7 and 10 hours respectively. If all the three pipes are opened simultaneously, then the tank will be filled in Question Description : 8 hours10 hours 11 hours9 hours

Pipe A alone takes only 40% of the time taken by pipe B alone to fill an empty tank. When an outlet pipe C is also opened simultaneously with pipe A and pipe B, it takes 3/4 more time to fill the empty tank than it takes, when only pipe A and pipe B are opened together. If it takes 15 hours to fill when all the three pipes are opened simultaneously, then in how much time (in hours) can pipe C empty the full tank operating alone

9 pipes are required to fill a tank in 4 hours. How long will it take if 12 pipes of the same type are used?Choices:-

Three pipes can fill a tank in 6, 10, 15 hours respectively. If they are opened together, how long does it take to fill the tank?

A tank is filled by three pipes with uniform flow. The first two pipes operating simultaneously fill the tank in the same time during which the tank is filled by the third pipe alone. The second pipe fills the tank 5 hours faster than the first pipe and 4 hours slower than the third pipe. The time required by the first pipe is:6 hours10 hours15 hours30 hours