Given that 5 mL of the solution contains 85 mg of medication.
The Unitary Method can be used to obtain the quantity of solution corresponding to 220 mg of medication,
[tex]\begin{gathered} \because85\text{ mg of medication}=5\text{ mL of solution} \\ \therefore220\text{ mg of medication}=(\frac{5\times220}{85})=12.941\approx12.9\text{ mL of solution} \end{gathered}[/tex]Thus, the patient should be given approximately 12.9 mL of the solution.
