7:45am to 12:15pm = 4.5 hours (4 hours 30 minutes)
5.75
There are 35 minutes
16.25
30 minutes.
4 and 1/4
9 hours, 45 minutes
The time from 3:30 PM to 12:15 AM is 8 hours and 45 minutes.
Midnight to noon is 12 hours (AM), noon to midnight is another 12 hours (PM). Therefore, it is 12 hours from PM to AM.
1
61/2 + 24n hours where n is an integer.
7:45 am to 6:15 pm is 10 hours 15 minutes (101/4 hours)
10 hrs