Carla has 4 hours to clean the laundry from 8 AM to 12 PM.
She needs to clean 80 pieces of laundry in 4 hours, so she needs to clean 80/4 = 20 pieces of laundry per hour.
Therefore, Carla needs to clean 20 pieces of laundry per hour.
#### 20
The answer is: 20
Below is a math problem. Provide a detailed, step-by-step solution.

### Problem:
Carla needs to dry-clean 80 pieces of laundry by noon. If she starts work at 8 AM, how many pieces of laundry does she need to clean per hour?

### Answer:
