Question

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

But the answer key states 16 days.

So I think the question meant to ask the maximum days, not the minimum days?

Answer 1

Actually... I think I misinterpret the question.....

So if it is asking for the minimum number of days, it would mean that Shelby would have to use it often...

So 24/4 = 6 times daily

6 x 2 inhalations = 12

200/12 = 16 days...

Is my thought process/ interpretation correct?

Answer 2

24/4 = 6 times a day
2 * 6 = 12 dosages a day
200/ 12 = 16.7 days

Answer 3

Yes, I agree.

Answer 4

So if it asks for the max number of days...

Is the answer 50 days?

Answer 5

for minimum 2 inhale every 4 hours
which is one inhale every 2 hours or 12 inhales/day
12 inhales/day * x days = 200 inhales
x = 16.6 so 16 days and a fraction

Answer 6

correct, you would use the shortest time period with the highest dosage, which is what you did.

btw, what do you think would be the maximum number of days?

Answer 7

Maximum number?
1 dose every 6 hours = 4 doses a day
200 / 4 = 50 days.

You're right