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