When a firm experiences constant returns to scale,
the firm is likely to experience coordination problems.
long-run average total cost is unchanged, even when output increases.
long-run marginal cost is greater than long-run average total cost.
long-run marginal cost is less than long-run average total cost.
The Correct Answer and Explanation is :
Correct Answer:
Long-run average total cost is unchanged, even when output increases.
Explanation:
Constant returns to scale (CRS) occur when a firm’s production increases in direct proportion to an increase in all inputs. For instance, if all inputs (like labor and capital) are doubled, output also doubles. Under CRS, the firm experiences no change in its long-run average total cost (LRATC) as production increases, since input costs rise proportionally with output.
Key Concepts:
- Long-run Average Total Cost (LRATC):
The LRATC represents the per-unit cost of production when a firm can adjust all inputs to find the most efficient production level. Under constant returns to scale, the cost per unit of output remains constant because the benefits of increased scale are exactly offset by the increased input costs. - Long-run Marginal Cost (LRMC):
LRMC measures the cost of producing one additional unit of output in the long run. Under CRS, LRMC is equal to LRATC because producing additional output doesn’t increase or decrease average costs.
Why Other Options Are Incorrect:
- Coordination Problems:
These are more common in cases of diseconomies of scale, where managing larger operations becomes inefficient, not under CRS. - LRMC > LRATC:
This indicates diseconomies of scale, where producing more increases average costs. - LRMC < LRATC:
This indicates economies of scale, where producing more decreases average costs.
Real-World Implications:
Firms operating under CRS are often at an optimal size where expanding or contracting scale does not affect efficiency. This is common in industries with standardized processes and relatively low complexity, such as small-scale manufacturing or basic agricultural production. Constant returns to scale provide predictability and stability for firms, ensuring steady cost management as output changes.