AlligationUse alligation to determine the parts of each strength of the components needed in each equation. A physician ordered potassium chloride 20%, 500 mL. The pharmacy stocks only 40% and 10% potassium chloride. How much of each is needed to make this solution?

What will be an ideal response?

1 part 40% (equaling 167 mL) and 2 parts 10% (equaling 333 mL).