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derail

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## Homework Statement

Suppose that a large mixing tank initially holds 400 gallons of water in which 65 pounds of salt have been dissolved. Another brine solution is pumped into the tank at a rate of 6 gal/min, and when the solution is well stirred, it is pumped out at a faster rate of 8 gal/min. If the concentration of the solution entering is 3 lb/gal, determine a differential equation for the amount A(s) of salt in the tank at time t.

## Homework Equations

Flow rate is Volume times cross sectional area, however, I do not know if that is relevant, it has been a while since I have done something like this.

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