Costs of production. Warm-up What are three things you learned from yesterday’s lesson about...
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Transcript of Costs of production. Warm-up What are three things you learned from yesterday’s lesson about...
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Costs of production
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Warm-up
What are three things you learned from yesterday’s lesson about supply.
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Essential question
Essential question:You are running a business. How do you account for the costs of production and labor so that you know how much you are spending on production?
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Labor & OutputScenario
You own a widget factory. It takes 1 worker 1 hour to produce 6 widgets. It takes 2 workers 1 hour to produce 11 widgets. It takes 5 workers 1 hour to produce 22 widgets. You make a profit of 6 dollars of each widget produced. Each worker makes 20 dollars an hour. In which scenario above do you make the most profit per hour?
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Total Profit
1 worker, 10 widgets per hour (10 widgets x 6 dollars
profit each) equals 36 dollars profit per hour minus $20 wage of worker is equal to $16 profit per hour
2 workers, 11 widgets per hour $24 profit per hour
5 workers, 22 widgets per hour $32 profit per hour
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Marginal Product of Labor
The change in output from hiring one more worker
Marginal Product of Labor = Change in output ÷ per unit change in labor
For example 1 worker from zero workers 6-0 (change in output) / (1-
0) change in labor 6/1 which is equal to 6 The marginal product of
labor for 1 worker from zero is 6
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Calculations
Calculate the Marginal Product of Labor from: 1 worker to 2 workers 2 workers to 5 workers
Remember marginal product of labor = Change in output/Change in per unit of labor
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Calculations
1 worker Change in output (6-0)/ Change in labor (1-0)
6/1 is equal to 6 Marginal product of labor is 6
2 workers Change in output (11-6)/Change in labor (2-1)
5/1 is equal to 5 Marginal product of labor is 5
5 workers from 2 workers Change in output (22-11)/ Change in labor 5-2)
11/3 is equal to 3 and 2/3 Marginal product of labor is 3 and 2/3
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Diminishing Marginal Returns
A level of production in which the marginal product of labor decreases as the number of workers increase
Here 200 workers (agents) produce 300 widgets while 400 workers only produce 200 widgets (units of return/output)
This is an example of diminishing marginal return
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Video on marginal profit & diminishing marginal return
http://www.youtube.com/watch?v=MtuCPRlTl38
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Production costs
Fixed Costs A cost that does not change
Rent Property Taxes Mortgage Payment Cable Bill
Variable costs Costs that rise or fall depending on how much is produced
Electricity Bill Retail items such as food or electronics. For instance, 1 box of spaghetti
might cost me $2 whereas 3 boxes of spaghetti would cost me $6 Labor is a variable cost. If you are not selling as many widgets, you may
decide to lay someone off to reduce your cost of labor.
Total Cost Variable costs plus Fixed Costs
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Part time SalesmanAn employee with guaranteed contract at
$30,000 for 3 yearsInternet BillElectricity BillCost of goods such as oranges, avocados
Identify whether the following are variable costs or fixed costs
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Marginal Cost
Marginal cost is the total cost that arises to produce one more unit
Marginal cost = Change in total cost ÷ Change in output
Example• I’m producing widgets once again. My fixed cost is $20.
Additionally, 1 widget has a variable cost of 2 dollars, 2 widgets have a variable cost of $3 and 3 widgets have a variable cost of $3.50. Each widget is selling for $10
• What is the total cost to produce one widget?• What is the marginal cost to produce 1 widget, 2 widgets,
3 widgets?• How many widgets must I produce to make a profit?
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Marginal Cost Answers
Total Cost is $22 for one widget ($23 for 2 widgets, $23.50 for 3 widgets and so on)
Marginal Cost for one widget is $2 Marginal cost for two widgets is $1 Marginal cost for three widgets is $.50
I must produce 3 widgets to make a profit
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Project
You are opening a new restaurant and you need to calculate your costs of production. You will be in groups of 4 and each group will have 2 iPads (2 students per iPad) to research actual costs. You may want to research what the costs are to operate a restaurant. The costs will depend on how large or small your restaurant is and what kind of restaurant you are operating. For instance, the costs of operating a McDonalds will probably be cheap, while the cost of operating a fancy restaurant such
What will your fixed costs be? Research the cost of each individual fixed cost
What will your variable costs be? Research the cost of each variable cost
Calculate your total costs of production, including labor