Question 11
In a tank, there is a pipe which can be used for filling the tank as well as emptying it. The capacity of the tank is $6000\mathrm{m}^3$ (meter cube). The emptying capacity of the pipe is $10\mathrm{m}^3$ higher than its filling capacity and the pipe needs 20 minutes lesser to empty the tank than it needs to fill the tank. What is the filling capacity of the pipe?.