To subtract 30 minutes from 6 hours and 15 minutes, first convert the time into minutes. 6 hours is 360 minutes, and adding 15 minutes gives a total of 375 minutes. Subtracting 30 minutes results in 345 minutes. Converting back to hours and minutes, 345 minutes equals 5 hours and 45 minutes.
6 hours 15 minutes.
10 hours 18 minutes
(20 hours 30 minutes) - (5 hours 45 minutes) = 14 hours 45 minutes.
1 hour 45 minutes.
3 hours 40 minutes.
23 hours 15 minutes minus 45 minutes is 22 hours 30 minutes.
6 hours 15 minutes.
12 hours 30 minutes
10 hours 18 minutes
7 hours 12 minutes - 3 hours 30 minutes = 3 hours 42 minutes
(20 hours 30 minutes) - (5 hours 45 minutes) = 14 hours 45 minutes.
1 hour 45 minutes.
3 hours 40 minutes.
Minus 45 minutes.
1 hour 15 minutes
2 hours 30 minutes
15 hours 5.5 minutes.