Read the passage below and solve the questions based on it.
There are three taps A,B, C and an outlet pipe D. A, B and C can fill the tank in the Panikam locality in 10, 20 and 25 h respectively. The outlet pipe can empty the same tank in 100 h. There are 2,000 houses in the locality. The tank has a capacity of 50,000 litres.
All the three taps were open and the emptying pipe is closed. At the time when the tank was supposed to be full, it was found that only 2/5th of the tank was full. It was discovered that all the residents had kept their water taps open during this period. At what rate were the residents of each house getting water? (Consider that each house has only one tap)