The solution contains salt and water, salt is 12% solution, what percentage is water.

This means that we are given a solution that contains certain fractions of substances: in our case, the solution consists of salt and water. We know how many percent the salt in the solution is -12%, but it would not hurt to know the percentage of the solution itself. Since the solution consists of two components, it is equal to one hundred percent (100%).
Solution – 100%;
salt – 12%;
So, to find the percentage of water, you need to subtract the percentage of salt from the percentage of the solution:
100% – 12% = 88%.
Answer: The solution contains 88% water.