Question

the prescribed dosage of a drug is 8 $\frac{mg}{kg}$ daily, meaning that 8 milligrams of the drug should be administered daily for each kilogram of a patients weight. how many 400 - milligram tablets should be given each day to a patient who weighs 185 pounds? (use the fact that 1 lb $approx$ 0.45 kg.) the patient should receive 400 - milligram tablets each day. (round to the nearest whole number as needed.)

Explanation:

Step1: Convert pounds to kilograms

Given 1 lb $\approx$ 0.45 kg, for a 185 - lb patient, the weight in kg is $185\times0.45=83.25$ kg.

Step2: Calculate the total daily dosage in mg

The dosage is 8 mg/kg, so for a 83.25 - kg patient, the total daily dosage is $8\times83.25 = 666$ mg.

Step3: Calculate the number of tablets

Each tablet is 400 mg. The number of tablets $n=\frac{666}{400}=1.665$.

Answer:

2