cost

Topics: Economics of production, Variable cost, Costs Pages: 4 (1110 words) Published: April 27, 2014
8‑2(Key Question) Gomez runs a small pottery firm. He hires one helper at $12,000 per year, pays annual rent of $5,000 for his shop, and spends $20,000 per year on materials. He has $40,000 of his own funds invested in equipment (pottery wheels, kilns, and so forth) that could earn him $4,000 per year if alternatively invested. He has been offered $15,000 per year to work as a potter for a competitor. He estimates his entrepreneurial talents are worth $3,000 per year. Total annual revenue from pottery sales is $72,000. Calculate accounting profits and economic profits for Gomez’s pottery.

Explicit costs: $37,000 (= $12,000 for the helper + $5,000 of rent + $20,000 of materials). Implicit costs: $22,000 (= $4,000 of forgone interest + $15,000 of forgone salary + $3,000 of entreprenuership).

Accounting profit = $35,000 (= $72,000 of revenue - $37,000 of explicit costs); Economic profit = $13,000 (= $72,000 - $37,000 of explicit costs - $22,000 of implicit costs). 8-4 (Key Question) Complete the following table by calculating marginal product and average product from the data given. Plot total, marginal, and average product and explain in detail the relationship between each pair of curves. Explain why marginal product first rises, then declines, and ultimately becomes negative. What bearing does the law of diminishing returns have on short‑run costs? Be specific. “When marginal product is rising, marginal cost is falling. And when marginal product is diminishing, marginal cost is rising.” Illustrate and explain graphically.

Inputs of
labor
Total
product
Marginal
product
Average
product

0
1
2
3
4
5
6
7
8

0
15
34
51
65
74
80
83
82

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Marginal product data, top to bottom: 15; 19; 17; 14; 9; 6; 3; -1. Average product data, top to bottom: 15; 17; 17; 16.25; 14.8; 13.33;...
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