Sue dissolved a certain amount of salt in 400 grams of water to obtain 405 grams of salt solution. What was the mass of the salt used to make the solution?
Sue added salt to water in order to make a salt solution, the original amount of water is 400 grams. In order for Sue to obtain 405 grams of salt solution using 400 grams of water, 5 grams of salt must be added.
