Answer:
3:20
Step-by-step explanation:
You can solve this problem by subtracting the movie length from the end time. This can be done in steps.
If you subtract 1 hour from 4:40, you are left with 3:40.
4:40 - 1 hour = 3:40
If you subtract 20 minutes from 3:40, you are left with 3:20.
3:40 - 20 minutes = 3:20
