2:30 hours from 9:30pm to midnight, then 8:30 hours from midnight to 8:30am. Total is 2:30 + 8:30 = 11:00 so answer is 11 hours. Alternatively 9:30pm to 9:30am is 12 hours, then minus 1 hour to get to 8:30am, so 12 - 1 = 11 also.
11:30am - 5:00pm = 5:30 hours 11:30pm - 5:00pm = 17:30 hours
4:30am to 4:00pm is 11.5 hours (11 hours 30 minutes)
8.30 am to 10.30 am is 2 hours.
9:30am to 2pm is 4 hours and 30 minutes. 9:30am to 2am is 16 hours and 30 minutes. 9:30pm to 2am is 4 hours and 30 minutes. 9:30pm to 2pm is 16 hours and 30 minutes.
8:30am to 2pm is 5.5hours (5 hours 30 mins)
From 8:30am to 7pm is 10 hours and 30 minutes.
From 8:30am to 7pm is 10 hours and 30 minutes.
9:30am to 5:30pm the same day is eight hours.
There are 5.5 hours between 10:30am and 4:00pm (16:00).
There are 9 hours between 630 am and 930 am.
11 hours and 30 minutes.Here is how I determined this mentally... There are 12 hours from 8:00am to 8:00pm ... so there is 1/2-hour less for the hours of 8:30am to 8:00pm ... which means 11 and 1/2 (11.5) hours.