Question

The dosage of a certain medication is determined by a patient's body weight. This medication's dosage is 2.5 mg per kilogram of

body weight. What would be the dose for a patient who weighs 72 pounds? (1 lb = 0.453 kg) (Doses are rounded to the nearest 25
mg.)

A) 75 mg
B) 100 mg
C) 375 mg
D) 400 mg

Show work please

Answer 1

To find the dose for a patient who weighs 72 pounds, we need to first convert the weight to kilograms. We can do this by dividing the weight in pounds by the conversion factor that tells us how many pounds are in a kilogram.

72 pounds / 0.453 kilograms/pound = 158.68 kilograms

Now that we know the patient's weight in kilograms, we can use the dosage formula provided to calculate the dose. The formula is:

dose (mg) = weight (kg) * dosage (mg/kg)

Plugging in the values, we get:

dose (mg) = 158.68 kilograms * 2.5 mg/kilogram

Simplifying this equation gives us:

dose (mg) = 397 mg

The nearest 25 mg to 397 mg is 400 mg, so the correct answer is D) 400 mg.