a tank contains 10,000 gallons of a solution that is 3 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 ?
"the remaining solution will be approximately what percent sodium chloride ? means : what percent of the remaining solution is sodium chloride . now , since the remaining solution is 10,000 - 4,000 = 6,000 gallons and sodium chloride is 300 gallons ( 3 % of initial solution of 10,000 gallons ) then sodium chloride is 300 / 6,000 * 100 = 5 % of the remaining solution of 6,000 gallons . answer : b ."
multiply(divide(multiply(multiply(const_100, const_100), divide(3, const_100)), subtract(multiply(const_100, const_100), add(multiply(add(const_2, const_3), multiply(multiply(add(const_2, const_3), const_2), const_100)), multiply(add(const_2, const_3), const_100)))), const_100)