There are 10 + 24n hours where n is an integer
6
There are 14 hours between 6 am and 8 pm.
Two hours.
From 6:00 am to 3:00 pm is 9 hours.
58
5.75
3 hours and 12 minutes.
60 hours elapse between 6 PM on Friday and 6 AM on Monday.
There are 6 hours between 8 am and 2 pm.
6 hours and 40 minutes.
8 am to 8 pm is 12 hours, but we want only until 6 pm, so 12-2 = 10 hours
13 hours.