The table below represents the output and cost structure for a firm. The market is perfectly competitive, and the market price is $10. Total costs include all implicit opportunity costs.
Answer
When output(Q) is '0' , firm's total cost(TC) = 3 .
The firm's fixed cost (FC) = 3
Now, Total cost = Fixed cost + Variable cost(VC)
Or, VC = TC - FC
The firm's VC = TC - 3 , for each level of output, and associated TC.
Average total cost(ATC) = TC / Q
Average variable cost (AVC) = VC / Q
Marginal Cost (MC) is the change in TC due to change in one additional level of output(Q).
MC = d(TC) / dQ
Marginal revenue(MR) is the change in total revenue(TR) due to change in one additional unit of output.
MR = d(TR) / dQ
Profit = TR - TC
Now, calculating all the values, and putting them in the table;
Output(Q) | Total Cost(TC) | Total Revenue(TR) | Profit | Marginal Cost(MC) | Marginal Revenue(MR) | Average Total Cost(ATC) | Variable Cost(VC) | Average Variable Cost(AVC) |
0 | 3 | 0 | -3 | xxx | xxx | - | - | - |
1 | 7 | 10 | 3 | 4 | 10 | 7 | 4 | 4 |
2 | 9 | 20 | 11 | 2 | 10 | 4.5 | 6 | 3 |
3 | 10 | 30 | 20 | 1 | 10 | 3.3 | 7 | 2.3 |
4 | 12 | 40 | 28 | 2 | 10 | 3 | 9 | 2.25 |
5 | 16 | 50 | 34 | 4 | 10 | 3.2 | 13 | 2.6 |
6 | 22 | 60 | 38 | 6 | 10 | 3.7 | 19 | 3.17 |
7 | 30 | 70 | 40 | 8 | 10 | 4.3 | 27 | 3.86 |
8 | 40 | 80 | 40 | 10 | 10 | 5 | 37 | 4.63 |
9 | 52 | 90 | 38 | 12 | 10 | 5.8 | 49 | 5.44 |
10 | 68 | 100 | 32 | 16 | 10 | 6.8 | 65 | 6.5 |
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Based on the information in the table above, the marginal cost (MC), and marginal revenue(MR) curves at each rate of output are shown in the figure below;
In the above figure, we are measuring output on the horizontal axis, and 'MR', and 'MC' on the vertical axis. The green curve is the 'MC' curve, and the purple line shows the 'MR'.
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Based on the information in the table above, the average total costs (ATC) and average variable costs(AVC) at each rate of output are shown in the figure below;
In the above figure, we are measuring output on the horizontal axis, and 'ATC', and 'AVC' on the vertical axis. The blue curve is the ATC curve, and the red curve is the AVC curve.
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The short-run supply curve for this perfectly competitive firm is shown in the following figure;
In the short-run, a perfectly competitive firm supplies the output, for which the marginal cost(MC) is equal to or above the minimum point of average variable cost(AVC). So the upward portion of the MC curve, which is above the AVC curve, is the short-run supply curve of a perfectly competitive firm. In the above figure, the yellow portion of the MC curve, is the firm's supply curve. So here, the firm's supply curve is 'PN' part of MC curve. Point 'P' is the minimum point of AVC curve.
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Based on the marginal analysis, the perfectly competitive firm produces the profit-maximizing level of output, where MR = MC.From the table, we see that at 8 units of output, the firm's MC = MR = 10.
So the firm's profit- maximizing rate of output is 8 units.
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The table below represents the output and cost structure for a firm. The market is perfectly...
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