Parking in a student cost $3 for the first half hour and $1.50 for each hour thereafter. A partial hour is charged the same as a full hour. What is the longest time that a student can park in this lot for $9?

Answer 1

9 - 3 = 6

6/1.5 = 4

4 + 1/2 = 4 1/2 hours

Answer 2

4.5