The solution contains 14% salt. How many kilograms of solution do you need to take to get 49 kg of salt?

To solve this problem, we introduce a conditional variable “X”, through which we denote the required amount of solution. Then, according to the condition of the problem, we will compose the following proportion: X kilograms of solution refers to 100 percent as 49 kilograms of salt refers to 14 percent. Then, we get the following equation: X = 100 x 49/14 = 350 kilograms of solution.
Answer: to get 49 kilograms of salt, you need to take 350 kilograms of solution.