A tank contains 10,000 gallons of a solution that is 5 percent sodium chloride by volume. If 4,000 gallons of water evaporate from the tank, the remaining solution will be approximately what percent sodium chloride?
Select the correct option:
A) 6.85%	B) 7.25%	C) 7.76%	D) 8.33%	E) 8.75%
The amount of sodium chloride is 0.05*10,000 = 500 gallons   500/6000 = 1/12 which is about 8.33%   The answer is 8.33%.
<result>D</result>
A tank contains 10,000 gallons of a solution that is 5 percent sodium chloride by volume. If 4,000 gallons of water evaporate from the tank, the remaining solution will be approximately what percent sodium chloride?