From 7:45 AM to 4:00 PM is a total of 8 hours and 15 minutes. To break it down, there are 8 hours from 7:45 AM to 3:45 PM, plus an additional 15 minutes from 3:45 PM to 4:00 PM. Therefore, the total duration is 8 hours and 15 minutes.
NO
If they're both on the same date, then they mark a period of 21/2 hours.
31 and 1/2 hours
From 5:30 AM to 4:00 PM is a total of 10 hours and 30 minutes. This can be calculated by counting the hours from 5:30 AM to 4:00 PM. Specifically, that's 10 hours from 5:30 AM to 3:30 PM, plus an additional 30 minutes to reach 4:00 PM.
2 hours.
9 hours, 45 minutes
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
NO
There are 35 minutes
If they're both on the same date, then they mark a period of 21/2 hours.
7:45am to 12:15pm = 4.5 hours (4 hours 30 minutes)
31 and 1/2 hours
31 and 1/2 hours
Four pm means 4 o'clock in the afternoon. 10:15 pm means a quarter past ten in the evening. So, there are 6 hours and 15 minutes in between.
Within any time zone, 6:45 AM to 7:45 PM of the same day is 13 hours.