pam started watching a movie at 2:53 pm the movie was 1 hour and 52 minutes long after the movie pam rode her bike for 46 minutes
Pam finished watching the movie at 4:45 pm (2:53 pm + 1 hour and 52 minutes).
After watching the movie, Pam rode her bike for 46 minutes.
Therefore, Pam finished riding her bike at 5:31 pm (4:45 pm + 46 minutes).