Answer :
Final answer:
To calculate the dosage of quinine per kg for a 145 lb adult taking a 200 mg tablet, we convert the adult's weight to kilograms and the dosage to micrograms. So the correct answer is option 3.
Explanation:
The question asks for the dosage of quinine per kg of body weight when a 145 lb adult takes a 200 mg tablet. To find the dosage in micrograms (μg) per kilogram, we first need to convert the person's weight from pounds to kilograms. There are approximately 0.453592 kilograms in a pound. Therefore, 145 lbs converts to approximately 65.77 kg (145 lbs × 0.453592).
Next, to find the dosage in micrograms per kilogram, we first convert the dosage from milligrams to micrograms. There are 1,000 micrograms in a milligram, so 200 mg is equal to 200,000 μg. Finally, we divide the total dosage in micrograms by the person's weight in kilograms to find the dosage per kilogram:
- Total dosage in μg: 200,000 μg
- Weight in kg: 65.77 kg
- Dosage per kg: 200,000 μg / 65.77 kg = 3,040 μg/kg
Therefore, the dosage of quinine for a 145 lb adult taking a 200 mg tablet is 3,040 μg drug per kilogram of body weight.
