To determine how many milliliters the patient need each meal we can use a rule of three:
[tex]\begin{gathered} 1\text{ mL}\rightarrow25\text{ mg} \\ x\rightarrow200\text{ mg} \end{gathered}[/tex]then:
[tex]x=\frac{200\cdot1}{25}=8[/tex]Hence the patient need 8 mL each meal; since the patient eats three meals per day he needs a total 24 mL per day of the medication.