A firm incurred the following costs in production. Use the information in the table to answer the question below.
| Output (bags of rice |
0 | 10 | 20 | 30 | 40 | 50 | 60 |
| Total Cost ($) | 100 | 200 | 300 | 380 | 440 | 520 | 600 |
The average cost of producing 40 bags of rice is_____
- $10
-
$11
- $60.
- $80