What is the percentage of salt in the solution if 400 g of solution contains 32 g of salt?

The desired unidentified amount of percent of the salt contained in the solution will be denoted by the dummy variable “Y”.

Based on the conditions of the example, we get this proportion: 400 grams are related to 100%, as 32 grams are related to Y%.

Using the proportion information, we have this expression: Y x 400 = 100 x 32.

When we count, we get the following value Y = 32 x 100/400 = 32/4 = 8%.

Answer: 8% of the salt is contained in the solution.