Question

A 200-gal tank is half full of distilled water. At time t = 0, a solution containing 0.5 lb /gal of concentrate en-ters the tank at the rate of 5 gal/ min, and the well-stirred mixture is withdrawn at the rate of 3 gal/min.

a. At what time will the tank be full?

b. At the time the tank is full, how many pounds of concentrate will it contain?

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Calculus

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