Final answer:
A person weighing 195 pounds should be given 253.5 mg of medication, calculated by dividing their weight by 10 and then multiplying by the dosage of 13 mg per 10 pounds.
Step-by-step explanation:
The question requires us to calculate the dose of medication based on a person's weight. Given that the prescriber orders 13mg of medication per 10 pounds of a person's weight, we need to determine how much medication a 195lb person requires. The calculation is a simple proportion:
To find the total medication dosage, we multiply the person's weight by the medication ratio:
Total dosage = (Person's weight / Weight unit for dosage) × Dosage per unit
Total dosage = (195 lb / 10 lb) × 13 mg
Total dosage = 19.5 × 13 mg
Total dosage = 253.5 mg
Therefore, a person weighing 195lb should be administered 253.5 mg of the medication.