Question

Mr. Doran is prescribed methotrexate. The dosage range of the med for his condition is 0.625 - 2.5 mg/kg/day. If he weighs 165 lb, what is the range, in mg, that Mr. Doran can safely take?

Answer 1

To find the safe dosage range in mg that Mr. Doran can take, his weight must first be converted from pounds to kilograms, then multiplied by the lower and higher ends of the medication's dosage range.

Step-by-step explanation:

The question involves calculating the correct dosage of a medication based on a person's weight. This falls under the subject of Mathematics, involving units conversion and multiplication.

First, we need to convert Mr. Doran's weight from pounds to kilograms since the dosage range is given in mg/kg. We know that 1 kg is equal to approximately 2.2 pounds. Mr. Doran weighs 165 pounds, so his weight in kilograms is 165 lb ÷ 2.2 lb/kg.

After calculating his weight in kilograms, we multiply the lower end of the dosage range (0.625 mg/kg) and the higher end (2.5 mg/kg) by Mr. Doran's weight in kilograms to find the range, in mg, that he can safely take per day.