Question 696695
The first half hour is $2.
$10 - 2$ = 8$
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The remaining time:
$8 / $1.25 = 6.4
But you are charged for a full hour so you can only afford 6 additional hours

The longest amount of time taht a stundent can park there for $10 is 6.5 hours.
That is the initial half hour fee plus six additional hours.