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chementhusiast chementhusiast
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6 years ago
A tank contains 10 L of water with 4 g/( L )  of dissolved salt. Water containing 2 g/( L )  of salt enters the tank at a rate of 7 L/( min ). The solution is kept thoroghly mixed and drains from the tank at the same rate.

How much salt is in the tank after t minutes? After 5 minutes?
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