A prescription calls for 40 mg amoxicillin four times daily for 25 days. If tablets are 20 mg each, how many tablets total?

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Multiple Choice

A prescription calls for 40 mg amoxicillin four times daily for 25 days. If tablets are 20 mg each, how many tablets total?

Explanation:
Think in total amount of drug required and how many tablets supply that amount. The patient needs 40 mg four times a day, which is 40 × 4 = 160 mg per day. Over 25 days that’s 160 × 25 = 4,000 mg total. Each tablet provides 20 mg, so the total number of tablets is 4,000 ÷ 20 = 200 tablets.

Think in total amount of drug required and how many tablets supply that amount. The patient needs 40 mg four times a day, which is 40 × 4 = 160 mg per day. Over 25 days that’s 160 × 25 = 4,000 mg total. Each tablet provides 20 mg, so the total number of tablets is 4,000 ÷ 20 = 200 tablets.

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