SOLUTION: Parking in a student lot costs $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 stu

Question 705264: Parking in a student lot costs $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 $7.

Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
For 1st 1/2 hr, student pays $3 and has $4 left
Add 1 hr, now = 1.5 hrs, student pays $1.50,
has $4 - $1.50 = $2.50 left
Add 1 hr, now = 2.5 hrs
has $2.50 - $1.50 = $1 left
Anything over the 2.5 hrs, the student will be
charged $1.50, but only has $1, so
2.5 hrs is the maximum time with $7
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