Answer:
2 hours 10 minutes
Step-by-step explanation:
LA has a one hour time zone difference than Denver. So if it was 9:55 am when you left LA, that is LA time. So, in Denver it was 10:55 am. If you land in Denver, Colorado at 1:05 pm it is the same as 12:05 pm in LA. So you can just count the hours from 9:55 am to 12: 05 pm.
