6:00 + 2:30 = 8:30
or
14:30 - 06:00 = 08:30
eight and a half
6 hours.
6 and 1/2
6
6 hours.
2 hours.
There are 10 + 24n hours where n is an integer
There are 14 hours between 6 am and 8 pm.
Two hours.
From 6:00 am to 3:00 pm is 9 hours.
58
5.75
3 hours and 12 minutes.