2.75 hours is 2 hours and 45 minutes. So you would leave at 2:15.
7 hours or 19 hours, depending on whether either time is AM or PM.
Six and a half 11:30am to 6pm
1130
1125 to the nearest tens is 1130
1130.4
2 hours from 1130 pm to 130 am 14 hours from 1130 am to 130 am
Three hours
3 hours.
1430
3 hours.
5 hours.
7 hours and 30 minutes.
7 hours and 30 minutes.
7 hours and 30 minutes.
(7+12k) hours where k is an integer.
3 hours and 50 minutes.
6 hours and 30 minutes.