Answer:
ana spends 2 hours 50 minutes working
Step-by-step explanation:
ana starts working at 2:40 pm and finishes work at 5:30 pm.
Let's bear in mind that there is 60 minutes in one hour.
Ana started 2.40 , the :40 means 40 minutes
While I 5:30, the :30 means 30minutes
The amount of time spent by anna at the working place.
5:30-2:40= 4 hours minus 2 hours, 90 minutes- 40 minutes
= 2 hours 50minutes
ana spend 2 hours 50 minutes working
