7 hours and 30 minutes is 7.5 hours.
That is 8 hours and 30 minutes exactly.
2 hours and 30 minutes
3 hours, 30 minutes
I believe you are asking how many minutes are in 2 hours and 30 minutes. The answer would be 150 minutes. There are 60 minutes in an hour, so in 2 hours there are 120 minutes, then plus 30 gives you 150.
4 hours and 30 minutes.
There are 210 minutes in 3 hours and 30 minutes, since there are 60 minutes in an hour.
It is 2 hours and 30 minutes.
570 minutes is 9 hours and 30 minutes.
1800 minutes / 60 minutes = 30 hours
8.5 hours is 8 hours and 30 minutes, or 510 minutes.
3 Hours and 30 Minutes=210 minutes=12600 seconds