A band came on stage at 9:55 and preformed for 2hours and 27 minutes what time did there performance

A band came on stage at 9:55 and preformed for 2hours and 27 minutes what time did there performance end?

2 hours from 9:55 means we add 2 hours to the hour of 9: 9 + 2 = 11
11:55

Now we add 27 minutes to this time:
5 more minutes gets us to 12:00 PM

27 -5 = 22 minutes
So we add 22 more minutes to get 12:22 PM