In a water tank, of the volume is occupied by water and the remainder of the volume is occupied by air. If a contaminant occupies of the water, by volume, and 20 percent of the air, what percent of the volume of the water tank is contaminated?
In a water tank, of the volume is occupied by water and the remainder of the volume is occupied by air. If a contaminant occupies of the water, by volume, and 20 percent of the air, what percent of the volume of the water tank is contaminated?