A tank of capacity 25 litres has an inlet and an outlet tap. If both are opened simultaneously, the tank is filled in 5 minutes. But if the outlet flow rate is doubled and taps are opened, the tank never gets filled up. Which of the following can be the outlet flow rate in liters/min?

A tank has four emptying taps, all of equal efficiencies, but each fixed at th, th, th and th of the height of the tank respectively. Two filling taps, each of which individually can fill the tank in 200 minutes, are also connected to the tank. If the ratio of the efficiency of each emptying tap and the efficiency of each filling tap is 1 : 3, and all the six taps are opened simultaneously, in how much time will the empty tank be filled?

Pipe X and Y can fill a tank in 10 minutes and 20 minutes respectively. If both the pipes are opened simultaneously, then the time taken to fill the tank is how much?

There are 3 taps, A, B and C, which can fill a tank in 20, 30 and 40 minutes, respectively. The tank has 2 holes, one at the bottom of the tank, and the other at half the height of the tank. The hole at the bottom of the tank can empty it in 120 minutes and the other hole also empties at the same rate. If all the taps are opened, find the time taken to fill the tank. min min min min

There are two inlet pipes to a tank, one taking 8 minutes and the other taking 12 minutes to fill the tank. Find the capacity of the tank if for every second 5 gallons of water is pumped into the tank by the two taps.1) 1600 gallons                       2) 1440 gallons           3) 1200 gallons                       4) None

Inlet X is 5 times faster than the outlet Y. If Y can empty a cistern in 36 minutes, the find the time when the cistern will be full if both fill pipes are opened together