how many hours from 8:30am to 1:pm?
8 hours.
Nine and a half hours.
840
Nine hours.
4.5 hours
ten and a half
8:30am to noon is 3.5 hours.
It is (8.5 + 24k) hours where k is an integer.
8 hours and 30 minutes.
1960
14 + 24k where k is any integer.
8:30am to 2pm is 5.5hours (5 hours 30 mins)