Mathematics, 18.02.2020 18:04 alliwkatring
Consider a reservoir with a volume of 8 billion cubic feet (ft3) and an initial pollutant concentration of 0.25%. There is a daily inflow of 500 million ft3 of water with a pollutant concentration of 0.05% and an equal daily out- flow of the well-mixed water in the reservoir. How long will it take to reduce the pollutant concentration in the reservoir to 0.10%?
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