If a prescription calls for 10 mg/kg of a drug and the patient weighs 70 kg, how much drug is needed?

To determine the amount of drug needed for the patient, you start by calculating the total dosage based on the patient's weight. The prescription specifies a dosage of 10 mg of the drug for each kilogram of the patient's body weight.

Given that the patient weighs 70 kg, you multiply the weight by the dosage per kilogram:

10 mg/kg × 70 kg = 700 mg.

This calculation shows that the total amount of drug required for a patient who weighs 70 kg is 700 mg. This is why the answer is correct, as it accurately reflects the prescribed dosage in relation to the patient's weight.