What percentage of water is contained in a solution consisting of 120 g of water and 80 g of salt.

To solve this problem, remember, in order to find how many percent one number is from another, you need to find the quotient of these numbers, and then convert it into percentages (for this, multiply the resulting number by 100%). Let’s calculate the total mass of the solution.
120 + 80 = 200 grams.
Let’s calculate how many percent the amount of water is – 120 grams, of the total mass of the solution – 200 grams.
120/200 * 100 = 0.6 * 100 = 60%.
Answer: 60%.