Show with the help of numerical example that average cost is constant when marginal cost is equal to it.
Show with the help of numerical example that average cost is constant when marginal cost is equal to it.
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Following table considers a situation when MC = AC over a range of output. It is a situation of constant returns to a factor.
| Output | Total Cost | MC | AC |
| 1 | 10 | 10 | 10 |
| 2 | 20 | 10 | 10 |
| 3 | 30 | 10 | 10 |
| 4 | 40 | 10 | 10 |
| 5 | 50 | 10 | 10 |
The table shows that when constant returns to a factor prevail over a range of output (1-5 units of output), MC remains constant. Consequently, TC increases at a constant rate and MC and AC are found to be equal to each other. In the entire range of output when AC = MC, AC is also found to be constant (like MC).
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