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Mathematics, 24.11.2020 21:50 elishaheart21

A tank contains 80 kg of salt and 2000 L of water. A solution of a concentration 0.02 kg of salt per liter enters a tank at the rate 6 L/min. The solution is mixed and drains from the tank at the same rate.

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A tank contains 80 kg of salt and 2000 L of water. A solution of a concentration 0.02 kg of salt per...

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