7 hours 49 minutes (assuming that they're both on the same day)
There are 6 hours of elapsed time between 9:00 AM and 3:00 PM.
18 minutes
About 30 minutes
3 hours 53 minutes
255
2 hours, 22 minutes.
The elapsed time of 1 pm to 9 am is 20 hours.
10 hours
1 hour and 40 minutes.
6 and 1/2 hours
10:20
It would be 7 hours