A tank contains 2680 L of pure water. A solution that contains 0.05 kg of sugar for each liter enters tank at the rate 6 L/min The solution is mixed and drains from the tank at the same rate.
(a) How much sugar is in the tank initially?
(b) Compute the amount of sugar in the tank after t minutes ( function of t)
(c) Compute the concentration of sugar in the solution in the tank after 57 minutes.