In October, the efficiency of each tap decreases by 20% compared to the efficiency in November due to leakage, and the capacity of the water tank is r...
Question
In October, the efficiency of each tap decreases by 20% compared to the efficiency in November due to leakage, and the capacity of the water tank is reduced to 80% of its original capacity of 600,000 liters. If the number of occupied flats in October is the same as the number of occupied flats in December (which is 30), how many hours will it take for the tank to be emptied in October?