The adult dose of medication is 100 mg. What would be the dose that should be given to a child who is 3 years old?

15 mg
25 mg
30 mg
40 mg


25 mg

Rationale: The 3-year-old child's dose would be 25 mg. Solve this problem by using Young's rule: Age of child (in years) / Age in child (in years) + 12, multiplied by the adult dose. So, 4 / 4 + 12 x 100 mg = 25 mg.

Health Professions

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