A tank contains 8000 L of pure water. Brine that contains 35 g of salt per liter of water is pumped into the tank at a rate of 25 L/min. The concentration of salt after t minutes (in grams per liter) is C(t) = 35t 320 + t . As t → [infinity], what does the concentration approach?

The concentration of salt in the tank approaches

Step-by-step explanation:

Data provide in the question:

Water contained in the tank = 8000 L

Salt per litre contained in Brine = 35 g/L

Rate of pumping water into the tank = 25 L/min

Concentration of salt

Now,

Dividing both numerator and denominator by , we have

Here,

The concentration of salt in the tank approaches

a is the correct

a. she will receive a refund of $278.

step-by-step explanation: