From 8:30am to 7pm is 10 hours and 30 minutes.
13.5
It 9 hours and 30 minutes.
(8.5+24k) hours where k is an integer.
13 and 1/2 hours
4 and 1/4
From 8:30am to 7pm is 10 hours and 30 minutes.
There are 4 hours between 8 am and 12:30 pm.
7 hours and 10 minutes.
fourteen and a half20:00 - 05:30 = 14:300:30 + 6:00 + 8:00 = 14:30
12 Hours ! There are 12 hours in the AM and 12 hours in the PM !
12 hours