How many 250 mg capsules are needed to fill a prescription order for 500 mg b.i.d. times 10 days? A) 40 B) 60 C) 30

## Step 1: <br />First, we need to understand the prescription order. The patient is prescribed 500 mg of medication twice a day (b.i.d.) for 10 days. This means the patient will take 500 mg of medication 2 times a day for 10 days.<br /><br />## Step 2: <br />Next, we calculate the total amount of medication needed for the 10 days. This is done by multiplying the daily dosage by the number of days. In this case, the daily dosage is 500 mg (twice a day) and the number of days is 10. So, the total amount of medication needed is \(500 \, \text{mg} \times 2 \times 10 = 10000 \, \text{mg}\).<br /><br />## Step 3: <br />Finally, we need to determine how many 250 mg capsules are needed to fill this prescription. We do this by dividing the total amount of medication needed by the amount of medication in each capsule. In this case, each capsule contains 250 mg of medication. So, the number of capsules needed is \(10000 \, \text{mg} \div 250 \, \text{mg/capsule} = 40 \, \text{capsules}\).