1 pm to 5:30 pm is a period of 4 hours 30 minutes.
Four hours and thirty minutes.
4.5 hours
8 hours.
8 hours.
9
9 hours
Nine hours.
8 hours, 45mins
Four hours and thirty minutes.
one hour
(6.5+12k) hours where k is an integer.
11hrs 30 minutes
Eight hours after 1:00pm is 9:00pm.
1275