A tank is filled with 200 gallons of brine in which is dissolved 5 pounds of salt. Brine containing 0.1 pound of salt per gallon enters the tank at a rate of 2 gallons per minute, and the well-stirred mixture is drawn from the talk at the same rate.(a) Find the amount of salt in the tank at time $t$ .(b) How much salt is present in the tank after 20 minutes?
(c) How much salt is present after a long time? What is the concentration then?

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The Answer of A tank is filled with 200 gallons of brine in which is dissolved 5 pounds of salt. Brine containing 0.1 pound of salt per gallon enters the tank at a rate of 2 gallons per minute, and the well-stirred mixture is drawn from the talk at the same rate.(a) Find the amount of salt in the tank at time $t$ .(b) How much salt is present in the tank after 20 minutes?
(c) How much salt is present after a long time? What is the concentration then?

A Tank Is Filled with 200 Gallons of Brine in Which