solution y is 30 percent liquid x and 70 percent water . if 4 kilograms of water evaporate from 8 kilograms of solution y and 4 kilograms of solution y are added to the remaining 6 kilograms of liquid , what percent of this new solution is liquid x ?
"in 8 kilograms of solution y there are 0.3 * 8 = 2.4 kilograms of solution x ; after 4 kilograms of water are replaced by 4 kilograms of solution y , to the existing 2.4 kilograms of solution x , 0.3 * 4 = 1.2 kilograms of solution x are added , so in the new solution of 8 kilograms there are 2.4 + 1.2 = 3.6 kilograms of solution x , which is 3.6 / 8 * 100 = 45 % of this new solution . answer : d ."
multiply(const_100, divide(add(multiply(8, divide(30, const_100)), multiply(4, divide(30, const_100))), add(add(multiply(8, divide(30, const_100)), multiply(4, divide(30, const_100))), add(subtract(multiply(8, divide(70, const_100)), 4), multiply(4, divide(70, const_100))))))