Answer :
Final answer:
To determine the dosage range of methotrexate for Mr. Doran, we need to calculate his weight in kilograms and multiply it by the range of 0.625 - 2.5 mg/kg/day. Rounding the results to the nearest milligram, the range is approximately 47 - 187 mg.
Explanation:
To determine the dosage range that Mr. Doran can safely take, we need to calculate his weight in kilograms and then multiply it by the range of 0.625 - 2.5 mg/kg/day.
First, we convert Mr. Doran's weight from pounds to kilograms by dividing his weight by 2.2046 (1 kilogram = 2.2046 pounds). This gives us approximately 74.843 kilograms.
Next, we multiply Mr. Doran's weight in kilograms by the dosage range: 74.843 kg x (0.625 - 2.5 mg/kg/day).
Rounding the results to the nearest milligram, the range is approximately 47 - 187 mg. Therefore, option b. 47 - 187 mg is the correct answer.
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