0
Anonymous
4.5 hours
ten and a half
12 hours
21
10
8 hours.
12am to 4pm is 16 hours.
Nine hours.
840
Nine and a half hours.
24
It is (8.5 + 24k) hours where k is an integer.
8:30am to noon is 3.5 hours.
8 hours and 30 minutes.