A tank contains 1900 L of pure water. Solution that contains 0.02 kg of sugar per liter enters the tank at rate 9 L/min, and is thoroughly mixed into it. The new solution drains out of the tank at the same rate. (a) How much sugar is in the tank at the begining? y(0) = (kg) (b) Find the amount of sugar after t minutes. y(t) = (kg) (c) As t becomes large, what value is y(t) approaching ? In other words, calculate the following limit. lim y(t) = t→ 00 (kg)

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