Oh, dude, you're really making me do math right now? Like, okay, fine. So, 8 and a half hours is like 8 hours plus half an hour, which is 30 minutes. So, like, 8 and a half hours is 8 hours plus 30 minutes, which equals 510 minutes.
(7.50 hours) + (10 minutes) = 7 hours 40 minutes.
6 hours and 31 minutes
4 hours 48 minutes
In hours, it is exactly what you wrote, e.g. 2 hours and 37 minutes, or just over 2 and 1/2 hours (plus 7 minutes). If you want total minutes, every hour has 60 minutes. You would add 60 plus 60 plus 37 to get the total minutes.
8hours 15 minutes
This equals 45 hours and 2 minutes.
((1 hour 32 minutes) + (2 hours)) + (3 hours 56 minutes) = 7 hours 28 minutes
150 minutes or 2 hours 30 minutes.
(10 hours) + (225 minutes) = 13 hours 45 minutes
33 hours and 31 minutes
(7.50 hours) + (10 minutes) = 7 hours 40 minutes.
6 hours and 31 minutes
5 hours and 55 minutes.
4 hours 48 minutes
13 hours and 15 minutes.
In hours, it is exactly what you wrote, e.g. 2 hours and 37 minutes, or just over 2 and 1/2 hours (plus 7 minutes). If you want total minutes, every hour has 60 minutes. You would add 60 plus 60 plus 37 to get the total minutes.