ECON 1B03 Lecture Notes - Lecture 8: Production Function, Diminishing Returns, Average Cost

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ECON 1B03 Full Course Notes

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Document Summary

Profit, , is the firm"s total revenue minus its total cost . The amount a firm receives for the sale of its output. The market value of the inputs a firm uses in production. A firm"s economic cost of production includes all the opportunity costs of making its output of goods and services. A firm"s cost of production include both. Explicit costs: require a direct outlay of money (get a receipt for) Implicit costs: no outlay of money and no receipts available, something that you give up of value. Economists measure a firm"s economic profit as total revenue minus total cost, including both explicit and implicit costs, that is, total opportunity costs. Accountants measure the accounting profit as the firm"s total revenue minus only the firm"s explicit costs. When total revenue exceeds both explicit and implicit costs, the firms earn economic profit.

Related Questions

5. Economic profit is equal to

a. total revenue minus the explicit cost of producing goods and services.

b. total revenue minus the opportunity cost of producing goods and services.

c. total revenue minus the accounting cost of producing goods and services.

d. average revenue minus the average cost of producing the last unit of a good or service.

6. Accounting profit is equal to

a. marginal revenue minus marginal cost.

b. total revenue minus the explicit cost of producing goods and services.

c. total revenue minus the opportunity cost of producing goods and services.

d. average revenue minus the average cost of producing the last unit of a good or service.

7. Economic profit

a. will never exceed the accounting profit.

b. is most often equal to accounting profit

c. is always at least as large as accounting profit.

d. is a less complete measure of profitability than accounting profit

8. Which of the following expressions is correct?

a. accounting profit = total revenue - explicit costs

b. economic profit = total revenue - implicit costs

c. economic profit = total revenue - explicit costs

d. Both a and b are correct

Scenario 13-2:

Zach took $400,000 out of the bank and used it to start his new cookie business. The bank account pays 3% interest per year. During the first year of his business, Zach sold 6,000 boxes of cookies for $2.50. Also during the first year, the cookie business incurred costs that required outlays of money amounting to $9,000.

9. Zach's accounting profit for the year was

10. Zach's economic profit for the year was

Scenario 14-1:

As part of an estate settlement, Mary received $1 million. She decided to use the money to purchase a small business in Anywhere, USA. If Mary would have invested the $1 million in a risk-free bond fund she could have made $100,000 each year. She also quit her job with Lucky.Com Inc. to devote all of her time to her new business; her salary at Lucky.Com Inc. was $75,000 per

11. At the end of the first year of operating her new business, Mary's accountant reported an accounting profit of $150,000. What was Mary's economic profit?

1. When a profit-maximizing firm produces, they will be producing at that output at which marginal cost = marginal revenue:

all of the time
some of the time
on rare occasions
none of the time

2. Economics Profit is:

the same as accounting profit
sales minus explicit costs and implicit costs
sales minus variable costs and fixed costs
opportunity cost only

3. A market structure with so many firms that no one firm has any influence over price, and firms produce an identical product is called:

monopoly
oligopoly
perfect competition
monopolistic competition

4. Which of the following is NOT a characteristic of a perfectly competitive market?

identical products
perfect mobility
perfect knowledge
price maker

5. The demand curve in a perfectly competitive market is perfectly elastic.

true
false

emeraldwombat313

PROFIT MAXIMIZATION

Reminders:

Q: Quantity, TC: Total Costs, VC: Variable Costs, MC: Marginal Costs, MR: Marginal Revenue, TR: Total Revenue

1. Suppose the market for DVD movies is perfectly competitive. The industry price for the movies is $24, and a typical firm has the following total cost data:

Q	TC	VC	MC	MR	TR	Net Profit
0	10
1	33
2	53
3	70
4	90
5	114
6	143

a. Calculate the TR, MR, and MC for each level of output.

b. What condition must be met for the firm to maximize profits? What is the profit maximizing level of output and price for this firm? How much profit would be made?

2. Now suppose that some firms have been able to differentiate their DVDs, and the market has become monopolistically competitive. A typical firm now has the following demand schedule and total cost data:

Q	P	TC	VC	MC	MR	TR	Net Profit
0	40	8
1	35	20
2	30	28
3	25	40
4	20	56
5	15	76
6	10	100