17. The recommended dosage of a medicine is 4 milligrams per kilogram of body weight. What is the recommended dosage, in milligrams, for a person who weighs 84 kilograms?
Answer: D
The recommended dosage for a person who weighs 84 kilograms is 336 milligrams.
To calculate the recommended dosage for a person weighing 84 kilograms, you multiply the weight by the dosage per kilogram: 4 mg/kg × 84 kg = 336 mg.
A) 21
This option is incorrect as it represents a much lower dosage than what is calculated. 21 milligrams is not a plausible dosage based on the provided recommendation of 4 milligrams per kilogram.
B) 88
This option is also incorrect. 88 milligrams does not reflect the proper calculation based on the weight of 84 kilograms and the recommended dosage of 4 milligrams per kilogram.
C) 324
While this option is close, it is still incorrect. The correct calculation yields 336 milligrams, which is higher than the 324 milligrams suggested in this option.
D) 336
This is the correct option. The dosage is calculated by multiplying the weight of 84 kilograms by the recommended dosage of 4 milligrams per kilogram, resulting in 336 milligrams.
E) 2100
This option is incorrect as it significantly overestimates the dosage. 2100 milligrams is far beyond what would be calculated for someone weighing 84 kilograms at a rate of 4 milligrams per kilogram.
Conclusion
The correct answer is 336 milligrams, as it directly results from the accurate multiplication of the person's weight and the recommended dosage. All other options fail to provide a correct or plausible dosage based on the given context, underscoring the importance of precise calculations in medication dosing.