Slides By Timothy Diette and Kevin Brady Input Markets Begin Interactive Examples To navigate,...
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Slides By Timothy Diette and Kevin Brady Input Markets Begin Interactive Examples To navigate, please click the appropriate green buttons. (Do not use the arrows on your keyboard) Material from this presentation can be found in: Chapter 11 CoreEconomics, 2e
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Transcript of Slides By Timothy Diette and Kevin Brady Input Markets Begin Interactive Examples To navigate,...
Slides By
Timothy Diette and Kevin Brady
Input MarketsBegin
Interactive Examples
To navigate, please click the appropriate green buttons.(Do not use the arrows on your keyboard)
Material from this presentation can be found in:
Chapter 11
CoreEconomics, 2e
Answer
QUESTION:
Consider a small business that sells tee shirts in a competitive market. The table to the right shows the number of workers, output, product price, and wage.
1. Fill in the marginal physical product of labor for each number of workers employed.
2. Fill in the marginal revenue product of labor column?
3. Why is the marginal revenue product equal to the value of the marginal product? In general, is this always true?
4. How many workers should this small business hire?
Input Markets
Interactive Examples
L Q MPPL P MRPL=VMPL W
--- 0 --- 5 --- ---
1 100 5 625
2 250 5 625
3 450 5 625
4 575 5 625
5 675 5 625
ANSWER:
1. Fill in the marginal physical product of labor for each number of workers employed.
The marginal physical product of labor equals the change in output divided by the change in the number of workers employed.
For example, the marginal physical product of the fourth worker is:
(575-450) / (4-3) = 125
Input Markets
Interactive Examples
L Q MPPL P MRPL=VMPL W
--- 0 --- 5 --- ---
1 100 100 5 625
2 250 150 5 625
3 450 200 5 625
4 575 125 5 625
5 675 100 5 625
Next
ANSWER:
2. Fill in the marginal revenue product of labor column.
The marginal revenue product of labor equals the marginal physical product of labor times marginal revenue. Since the market is competitive, the marginal revenue is the price, or $5.
For example, the marginal revenue product of labor for the third worker is:
200 x 5 = $1000
Input Markets
Interactive Examples
L Q MPPL P MRPL=VMPL W
--- 0 --- 5 --- ---
1 100 100 5 500 625
2 250 150 5 750 625
3 450 200 5 1000 625
4 575 125 5 625 625
5 675 100 5 500 625
Next
ANSWER:
3. Why is the marginal revenue product equal to the value of the marginal product? In general, is this always true?
The marginal revenue product of labor is equal to the marginal physical product of labor times marginal revenue.
The value of the marginal product is equal to the marginal physical product of labor times the price.
In a competitive market, firms are price takers. The marginal revenue equals the price.
This is not always true! When the market is not competitive, the marginal revenue is less than the price.
Input Markets
Interactive Examples
L Q MPPL P MRPL=VMPL W
--- 0 --- 5 --- ---
1 100 100 5 500 625
2 250 150 5 750 625
3 450 200 5 1000 625
4 575 125 5 625 625
5 675 100 5 500 625
Next
ANSWER:
4. How many workers should this small business hire?
Profits are maximized for the competitive firm when workers are hired out to the point where the value of the marginal product equals the wage.
For this small business, this occurs when the fourth worker is hired. The value of the marginal product of the fourth worker is $625, which equals the wage.
Input Markets
Interactive Examples
L Q MPPL P MRPL=VMPL W
--- 0 --- 5 --- ---
1 100 100 5 500 625
2 250 150 5 750 625
3 450 200 5 1000 625
4 575 125 5 625 625
5 675 100 5 500 625
The End
