640 am
it is 1 hour 30 mins = 1½ hours.
55,800 (930 x 60mins)
That would be 06.40
1460
9 hours.
8
1 month 210 hours
This is equivalent to 16 hours.
6 3/4 hours
6 hours and 30 minutes.
60 min = 1 hour 09:30 to 10:00 = 30 mins = 30 ÷ 60 hours = 0.5 hours 10:00 to 12:00 (midday) = 2 hours 12:00 (midday) to 4 pm = 4 hours → total time = 4 + 2 + 0.5 hours = 6.5 hours.
There are (7.5 + 24k) hours where k is an integer.