From 9:30 to the next occurrence of 4:30 is seven hours.
55,800 (930 x 60mins)
From 9:30 AM to 4:30 PM is a total of 7 hours. It starts with 2.5 hours to reach noon, and then from noon to 4:30 PM is an additional 4.5 hours. Adding these together gives you 7 hours.
9 hours and 30 minutes.
1460
9 hours.
8
1 month 210 hours
This is equivalent to 16 hours.
6 3/4 hours
6 hours and 30 minutes.
7 hours
430 miles is a 5 hour and 32 minute