The time from 8:45 to 9:15 is 30 minutes. You can calculate this by subtracting 8:45 from 9:15, which gives you the difference of half an hour.
131 minutes
It is 390 minutes.
13 hours and 15 minutes.
4 hours 45 minutes.
6 hours and 30 minutes.
8 hours and 15 minutes.
10 hrs
It is 10:31.
Exactly 915.
845 PM
915 millimeters = 3 feet.
6 hours and 45 minutes.