You can separate them with a colon, like this
12:32
Which would best represent a time.
Or 12h 32m for a time period.
It is 5 hours and 6 minutes.
3 hours 30 minutes = 3.5 hours
III hours, XXX minutes
2.5 hours
1 hour = 60 minutes h hours = 60h minutes
It is 5 hours and 6 minutes.
600 minutes = 10 hours
3 hours 30 minutes = 3.5 hours
Seven hours, fifteen minutes.
III hours, XXX minutes
2.5 hours
15 minutes is 1/4 hour or 0.25 hours.
1 hour = 60 minutes h hours = 60h minutes
3.25 hours
4.15
2.25 hours.
5.25 hours