Parking charges at Superior Parking Garage are $5.00 for the first hour and $1.50 for each additional 30 minutes. If Margo has $12.50, what is the maximum amount of time she will be able to park her car at the garage?

The maximum time she can park her car here is 3 1/2 hours (3 hours and 30 minutes).

So what you want to do is subtract $5 to 12.50 for the first hour so then you will have 7.50

After that you want to divides 7.50/1.50 so you can see how many hours you have left.

7.50/1.50=5

Then you want to multiple 5*30 to get your time and that is 2hrs and 30 min

Then add the hour for the first hour that you had and it would be 3hrs and 30 min