1800
270 minutes.
9hours 30minutes or 9.5hours
it takes 30minutes for 20 miles
30minutes
1hour 30minutes
It is 1/2 an hour
Any time longer than no time and shorter than 3hours 30minutes is a proper fraction of 3hours 30minutes .
4hours and 30minutes
2hours and 30minutes
6hr 30minutes.
30minutes to an hour
your body starts puffie