It's 2 and a half hours, you've already answered it!
150 mins is 2 and a half hours
0.5 hours / 1/2 an hour / 30 mins
there are 14 five mins in 2 hours
2 hours and 40 minutes.
2 hours, 25 minutes
2 hours and 15 minutes
12 2/3 hours
2 hours 45 mins
2/3
That would depend on where you were to start with.
2.3 hours or 2 hours and 18 minutes.