how many liters of water must be evaporated from 50 liters of a 3 - percent sugar solution to get a 4 - percent solution ?
"how many liters of water must be evaporated from 50 liters of a 3 - percent sugar solution to get a 4 - percent solution ? 3 % of a 50 liter solution is 1.5 l . so you are trying to determine how many liters must a solution be for the 1.5 l to represent 4 % of the solution . set up an inequality and solve for x : 1.5 / x = 1 / 4 x = 6 since you need a 15 l solution , you must evaporate 21 of the original 50 l solution to get a 4 % solution . answer is c ."
subtract(50, multiply(divide(50, const_100), 4))