Скачать или смотреть Salt mixture A tank initially contains 100 gal of brine in which 50 lb of salt are disso…

Salt mixture A tank initially contains 100 gal of brine in which 50 lb of salt are dissolved. A brine containing 2 lb / gal of salt runs into the tank at the rate of 5 gal / min. The mixture is kept uniform by stirring and flows out of the tank at the rate of 4 gal / min. a. At what rate (pounds per minute) does salt enter the tank at time t ? b. What is the volume of brine in the tank at time t ? c. At what rate (pounds per minute) does salt leave the tank at d. Write down and solve the initial value problem describing the e. Find the concentration of salt in the tank 25 min after the process starts.

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