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A large 500 gallon tank is full of pure water. Brine comes in that has 2...

A large 500 gallon tank is full of pure water. Brine comes in that has 2 (lb) of salt per gallon and a ratio of 5 (gal / min). 
The well mixed solution selling the tank with the same reason.
a) determine the amount A(t) of pounds of salt in the tanqye at time t
b) What is the concentration c(t) of salt in the tank at time t? And at time t = 5min? What is the concentration in the tank after a long time? For what salt time in the tank is equal to half of this limit value?
c) Assume that the solution comes out at a rate of 10 gal / min. How much is the tank emptied?
Math   Advanced-Math   
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