# Beaker A contains a 10% salt solution. What percent water would it contain?

"mass of component"/"mass of solution"xx100%,
where $\text{mass of solution "=" mass of solute + mass of water.}$ This is also known as a mass fraction.. Beaker A was thus prepared by taking $10 \cdot g$ of salt, and adding $90 \cdot g$ of water. The volume of the solution would thus not be much different from $90 \cdot m L$.