0715 hours
6 hours and 30 minutes
14 hours, and 30 minutes
It is 4 hours and 15 minutes.
4 + 24k where k is any integer.
8 hours.
There are 4 hours and 15 minutes, or 4.25 hours, between 3:00 pm and 7:15 pm.
There are 4 hours between 8 am and 12:30 pm.
11 hours 25 minutes
1230 ???? Are you on the '24' hour clock? If so , 5 hours previously will be 0730 hrs. If you are on the '12 hour' clock, please specify whether it is 'am' or 'pm'. If it is 12:30 am , the 5 hours previously will be 7:30 pm If it is 12:30 pm , then 5 hours previously will be 7:30 am.
Less than 1 hour three quarters 8:00 - 7:15 = 0:45 45/60 = 3/4
From 6:15pm to 7:15am is 13 hours.