727 minutes.
There are 60 minutes in an hour. In 1 hour and 15 minutes, you have 60 minutes from the hour plus 15 minutes, which totals 75 minutes.
15 hours 5.5 minutes.
5 minutes 51 seconds.
712
11:15
The sum of 712 plus 518 is 1230
3 + 712 = 715
712 + 310 = 1022
They add up to: 737
There are 60 minutes in an hour. In 1 hour and 15 minutes, you have 60 minutes from the hour plus 15 minutes, which totals 75 minutes.
15 hours 5.5 minutes.
8hours 15 minutes
5 hour 30 minutes
5 minutes 51 seconds.
712
13 hours and 15 minutes.
8:30 plus 45 minutes equals 9:15. To add the two times together, you can convert 8:30 to 8:00 and add the 45 minutes to get 8:45. Then, adding another 30 minutes gives you a total of 9:15.