12 Hours.
There are 16 hours from 4 am to 8 pm. 4 am to 4 pm is 12 hours, then 4 pm to 8 pm is another 4 hours.
There are 5 hours between 4 pm and 9 pm
21 hours
2 hours
3 hours
It is seven hours from 9 AM to 4 PM.
Two hours.
Assuming 9:30am to 1:30pm or pm to am, 4 hours, if am to am or pm to pm, it is 20 hours.
4 hours and 20 minutes.
53 hours
4 hours and 15 minutes.
The time from 6 AM to 4 PM is a duration of 10 hours. To calculate this, you can count the hours from 6 AM to 12 PM (6 hours) and then from 12 PM to 4 PM (4 hours), which adds up to a total of 10 hours.