6 hours.
91/2 , IF they're both on the same day.
6 hours.
9:45 pm to midnight is 2 hours and 15 minutes Midnight to 8:30 am is 8 hours and 30 minutes Hence the total is 10 hours and 45 minutes = 10 and 3/4 or 10.75 hours
6
2 hours.
There are 10 + 24n hours where n is an integer
There are 14 hours between 6 am and 8 pm.
Two hours.
From 6:00 am to 3:00 pm is 9 hours.
5.75
6 hours and 30 minutes