8 hours and 30 minutes.
Ten hours.
9 hours, 45 minutes
9 hours
9
9
There are 5 hours between 4 pm and 9 pm
5 hours
The time from 5 AM to 9 PM is 16 hours. To calculate this, you count the hours from 5 AM to 12 PM (7 hours) and then from 12 PM to 9 PM (9 hours), which totals 16 hours.
The time from 11 AM to 9 PM is 10 hours. You can calculate this by counting the hours from 11 AM to 12 PM (1 hour), then from 12 PM to 9 PM (8 hours), giving a total of 1 + 8 = 9 hours.
9 hours.
53 hours
9-2=7 hours