Warren Buffet office hours are weekly, 30 minutes video chat with extraordinary leaders.
Generally the office hours of the clinic.
Starting on January 1st, 2010, 26280 hours.
The painter charged 8 hours labour to paint the office. There is no information in the question about how much time the painter actually took to paint the office.
There are 3 hours from 2 AM to 5 AM. You can find this by simply subtracting the starting time from the ending time: 5 AM - 2 AM = 3 hours.