There are 9 hours between 630 am and 930 am.
6 hours and 30 minutes.
6 3/4 hours
6
There are 6 1/4 hours between 9:30 am and 3:45 pm, or between 9:30 pm and 3:45 am.There are 18 1/4 hours between 9:30 am and 3:45 am, or between 9:30 pm and 3:45 pm.
930
2 hours.
6 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.