A tank having a capacity of 1000 liters, initially contains 400 liters of sugar water having a concen-
tration of 0.2 Kg of sugar for each liter of water. At time zero, sugar water with a concentration of
50 gm of sugar per liter begins pumped into the tank at a rate of 2 liter per minute. Simultaneously,
a drain is opened at the bottom of the tank so that the volume of the sugar-water solution in the
tank reduces 1 liter per minute. Determine the following:
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