Shelby has a new prescription for an albuterol inhaler. The directions say to use 1-2 inhalations every 4-6 hours as needed. The inhaler you dispense says that it provides 200 doses. What is the minimum number of days the albuterol inhaler would last for Shelby?

My answer:

25 days

Assuming you're awake 16 hours a day, the most you could use the albuterol is 8 times a day.

200 / 8 = 25

Yes, you're right.