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a solution containing 0.5 Ib/gal of concentrate enters the tank at the rate 5 gal/min, and the well-stirred mixture is withdrawn at the rate of 3 gal/min.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

The storm drains system transports rainwater or stormwater and other runoff from roads, parking lots, and roof downpipes directly to nearby creeks, rivers, or the sea without any treatment.