60 minutes = 1 hour so 415 min = 415/60 = 6.9166... hours. Simple!
It is 9 hours.
there are 24 hours in one day 415 /24 = 17.29 days, or 17 days and 7 hours
ten
6 hours and 30 minutes.
10 hours and 15 minutes.
9 hours.
6 3/4 hours
9 hours and 42 minutes.
It is 10 hours and 45 minutes.
8 and 1/2
3 hours and 30 minutes.