5.75
11 hours. From 8 am to 8 pm would be 12 hours, and 7 pm is 1 hour less than that.
(8.5+24k) hours where k is an integer.
2 hours
3 hours and 15 min
5.75
16.25
The time from 3:30 PM to 12:15 AM is 8 hours and 45 minutes.
It 9 hours and 30 minutes.
11 hours. From 8 am to 8 pm would be 12 hours, and 7 pm is 1 hour less than that.
(8.5+24k) hours where k is an integer.
13 and 1/2 hours
This is a variable number. You need to state a start or end date.
There are 4 hours between 8 am and 12:30 pm.
7:45am to 12:15pm = 4.5 hours (4 hours 30 minutes)
7 hours and 10 minutes.
30 minutes.