Answer :
There are 60 minutes in an hour. So it's 60 x 5 = 300. There are 300 minutes in 5 hours. I hope that helps! :)
1 hour = 60 minutes
2 hours = 120 minutes
3 hours = 180 minutes
4 hours = 240 minutes
5 hours = 300 minutes
(5 hours) x (60 minutes / 1hour) = 300 minutes
5 x 60 = 300