8hours 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.
4 hours 48 minutes
five and a half hours in total.
129 minutes = 2hours plus 9 minutes left over, or 2.15 hours.
This equals 45 hours and 2 minutes.
it would be 10 hours 15 minutes! 3 hours plus 6 hours is 9 hours 25 minutes plus 50 minutes is 75 minutes, there are 60 minutes in an hour so you have to take 75 minus 60 which leaves you with 15, add the hour onto the 9 hours, gives you 10 hours 15 minutes.
((1 hour 32 minutes) + (2 hours)) + (3 hours 56 minutes) = 7 hours 28 minutes
150 minutes or 2 hours 30 minutes.
(7.50 hours) + (10 minutes) = 7 hours 40 minutes.
6 hours and 31 minutes
33 hours and 31 minutes
5 hours and 55 minutes.