Question

A physician writes a prescription for aspirin 10 grains to be given daily. How many mg is this equal to?

1) 325 mg
2) 500 mg
3) 575 mg
4) 650 mg

Answer 1

To convert 10 grains of aspirin to milligrams, multiply by the conversion factor of 64.79891 mg/grain, the answer is approximately 650 mg.

Step-by-step explanation:

The question asks to convert the dosage of aspirin from grains to milligrams. Aspirin is commonly prescribed and understanding the conversion is important for healthcare professionals.

1 grain is approximately equal to 64.79891 milligrams. The prescription states that the patient is to take 10 grains of aspirin daily. Multiplying 10 grains by the conversion factor yields:

10 grains * 64.79891 mg/grain = 647.9891 mg

Therefore, the closest answer to our calculation would be 650 mg (option 4), since that is the standard rounding for medication dosages.