The Volume of Pollutants (In Millions of Cubic Feet) in a Certain

Short Answer

The volume of pollutants (in millions of cubic feet) in a certain reservoir is given by $P(t)=400+35 t$ , where $t$ is time in years. The volume of the reservoir (including pollutants) is gradually increasing and is given by $R(t)=12,000+110 t$ . Let $C(t)$ be the fraction of the reservoir's volume that consists of pollutants. If these trends continue for many years, approximately what percent of the reservoir's total volume would eventually be pollutants? Round to 1 decimal place.