A tank contains 10,000 gallons of a solution that is 5 percent sodium chloride by volume. If 2,000 gallons of water evaporate from the tank, the remaining solution will be approximately what percent sodium chloride?
Choose the correct option
A) 1.25%	B) 3.75%	C) 6.25%	D) 6.67%	E) 11.7%
The amount of sodium chloride is 0.05*10,000 = 500 gallons   500/8000 = 1/16 = 6.25%   The answer is 6.25%.
<result>C</result>
A tank contains 10,000 gallons of a solution that is 5 percent sodium chloride by volume. If 2,000 gallons of water evaporate from the tank, the remaining solution will be approximately what percent sodium chloride?