(Last Updated On: January 22, 2020)

#### Problem Statement:

In a tank are 100 liters of brine containing 50 kg. total of dissolved salt. Pure water is allowed to run into the tank at the rate of 3 liters a minute. Brine runs out of the tank at the rate of 2 liters a minute. The instantaneous concentration in the tank is kept uniform by stirring. How much salt is in the tank at the end of one hour?

- A. 15.45 kg
- B. 19.53 kg
- C. 12.62 kg
- D. 20.62 kg

#### Problem Answer:

There are **19.53 kg** of salt in the tank at the end of one hour

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