21 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.
4 hours, 20 minutes 4 and 1/3 hours
It is seven hours from 9 AM to 4 PM.
From 10:30 AM to 4:30 PM is a total of 6 hours. You can calculate this by counting the hours from 10:30 AM to 4:30 PM, which includes 11:30 AM, 12:30 PM, 1:30 PM, 2:30 PM, 3:30 PM, and finally 4:30 PM. Therefore, the duration is 6 hours.
The time from 8 AM to 4 PM is 8 hours. This is calculated by counting the hours from 8 AM to 12 PM (noon) which is 4 hours, and then from 12 PM to 4 PM, which adds another 4 hours. Therefore, 4 hours plus 4 hours equals 8 hours in total.
3 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.
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.
4 and 1/4
4 hours, 20 minutes 4 and 1/3 hours
There are 5 hours between 4 pm and 9 pm
It is seven hours from 9 AM to 4 PM.
2 hours
One to five is either 4 hours or 16 hours, depending on whether the times are AM or PM. Four hours if both are AM or PM, 16 hours if one is AM and the other is PM.
Two hours.
There are 6 hours between 8 am and 2 pm.
12 Hours.