4.5 hours
There are 4 and 1/2 hours between 8:30 and 1.
ten and a half
Three hours
1 hour 34 minutes 0:30 + 1:00 + 0:04
830 930 1030 1130 1230 130 230 330 7 hours
Nine hours.
8 hours.
2 hours from 1130 pm to 130 am 14 hours from 1130 am to 130 am
Nine and a half hours.
840
4.5 hours
There are 4 and 1/2 hours between 8:30 and 1.
ten and a half
If those two times are both in the same day, then the period between them is 121/2 hours long.
8:30am to noon is 3.5 hours.
It is (8.5 + 24k) hours where k is an integer.