3 hours 30 minutes
9 hours and 30 min
8 1/2 hours, if the times are on the same day.
9 hours.
9 hours.
3
From 630 am to noon is 5.5 hours. From noon to 330 pm is 3.5 hours. Total =9 hours.
7 and a half hours
10.5 hours
There are 9 hours between 630 am and 930 am.
630 minutes.
8.5 hrs
8.5
(7+12k) hours where k is an integer.