There are 5.5+24k hours where k is an integer.
8 hours.
7 hours
1.5 hours.
7 hours and 30 minutes.
2hrs and 30mins
3pm to 10pm is 7 hours.
13
9 + 24k where k is an integer.
3 hours between 12pm and 3pm
4 hours and 15 minutes.
24 of course !
7 and a half