A container contains 1000L of salt solution, with salt concentration = 50 g/L. At time zero, salt-free water starts to flow into the container at a...

A container contains 1000L of salt solution, with salt concentration = 50 g/L. At time zero, salt-free water starts to flow into the container at a rate of 0.10 L/min. Simultaneously, salt solution flows out of the container at 0.10 L/min. A mixer in the tank keeps the concentration of salt in the container uniform so that the concentration in the effluent is the same as the concentration in the container. What is the salt concentration inside of the container after 50 mins?