From 9 AM to 4:30 PM is a duration of 7 hours and 30 minutes. This can be broken down as follows: 9 AM to 4 PM is 7 hours, and adding the additional 30 minutes brings the total to 7 hours and 30 minutes.
9 hours and 30 minutes.
5.5
5 hours and 30 minutes.
1 hour, 10 minutes
8
9.5
4 + 24k where k is any integer.
3 hours and 30 minutes.
5 hours and 15 minutes.
13 hours and 40 minutes.
8 hours.
The time 4:30 PM is "four-thirty PM."