... (nearly)1
Using the mathematical model we set up below, Infinite time is required to process 100 % of the tank water. Therefore, we will say that when 99.9 % of the water has been processed, then ``all'' the tank water has been processed, and will calculate the time required to process 99.9 %.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.