A prednisone taper is ordered using 10 mg tablets: 40 mg daily for 3 days, then 30 mg daily for 3 days, then 20 mg daily for 3 days, then 10 mg daily for 3 days. What quantity should be dispensed?

Giải thích

With 10 mg tablets the daily tablet counts are 4, 3, 2 and 1. Each step runs 3 days: (4 x 3) + (3 x 3) + (2 x 3) + (1 x 3) = 12 + 9 + 6 + 3 = 30 tablets. Answering 10 tablets comes from adding 4 + 3 + 2 + 1 and forgetting to multiply each step by its 3 days.