There are (7.5 + 24k) hours where k is an integer.
930
Six hours in total !
48
There are 5 hours between 4 pm and 9 pm
There are 2+12k hours where k is an integer.
5 hours and 15 minutes
5 hours and 30 minutes.
12 hours
Twenty hours.
5 hours
5 hours
8 hours