There are 60 minutes in an hour. So, 60*45=2700 minutes in 45 hours.
60 minutes
22 minutes are 22 minutes.
There are 249 minutes in 249 minutes.
30 minutes
16 minutes
Exactly 18 minutes in 18 minutes.
100 minutes = 1 hour and 40 minutes
12 minutes
500 minutes.
1397 minutes
80 minutes
232 minutes