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Wanda owns a lemonade stand. She produces lemonade using five inputs: water, sug

ID: 1164181 • Letter: W

Question

Wanda owns a lemonade stand. She produces lemonade using five inputs: water, sugar, lemons, paper cups, and labor. Her costs per glass are as follows: $0.01 for water, $0.02 for sugar, $0.03 for lemons, $0.02 for cups, and $0.10 for the opportunity cost of her labor. She can sell 300 glasses for $0.50 each.

Refer to Scenario 13-8. What are Wanda’s total economic costs per glass?

$0.18

$0.08

$0.02

d. $0.10

also,

Quantity
of
Output


Fixed
Cost


Variable
Cost


Total
Cost

Average
Fixed
Cost

Average
Variable
Cost

Average
Total
Cost


Marginal
Cost

1

$23

$33

2

$38

3

$70

4

$64

5

$110

6

$118

7

$143

8

$185

Refer to Table 13-14. What is the marginal cost of the 2nd unit of output?

$38

$24

$15

$10

Lastly,

Ariana withdrew $400,000 out of her personal savings account and used it to start her new Internet cafe. The savings account pays 3 percent interest per year. During the first year of her business, Ariana sold 2,000 cups of coffee for $2.50 per cup and 4,000 hours of Internet time, also at $2.50 per hour. During the first year, the business made monetary outlays of $9,000. You may assume that there is no opportunity cost to Ariana’s time.

Refer to Scenario 13-12. Ariana’s economic profit for the year was

$-6,000.

$6,000.

$-394,000.

$3,000.

a.

$0.18

b.

$0.08

c.

$0.02

d. $0.10

also,

Quantity
of
Output


Fixed
Cost


Variable
Cost


Total
Cost

Average
Fixed
Cost

Average
Variable
Cost

Average
Total
Cost


Marginal
Cost

1

$23

$33

2

$38

3

$70

4

$64

5

$110

6

$118

7

$143

8

$185

Refer to Table 13-14. What is the marginal cost of the 2nd unit of output?

a.

$38

b.

$24

c.

$15

d.

$10

Lastly,

Ariana withdrew $400,000 out of her personal savings account and used it to start her new Internet cafe. The savings account pays 3 percent interest per year. During the first year of her business, Ariana sold 2,000 cups of coffee for $2.50 per cup and 4,000 hours of Internet time, also at $2.50 per hour. During the first year, the business made monetary outlays of $9,000. You may assume that there is no opportunity cost to Ariana’s time.

Refer to Scenario 13-12. Ariana’s economic profit for the year was

a.

$-6,000.

b.

$6,000.

c.

$-394,000.

d.

$3,000.

Explanation / Answer

13-8.

Economic Costs includes both direct and indirect costs

Water

Sugar

Lemons

Cups

Opp Cost

Economic Costs

0.01

0.02

0.03

0.02

0.1

13-14

Option c

Quantity

Average

Average

Average

of

Fixed

Variable

Total

Fixed

Variable

Total

Marginal

Output

Cost

Cost

Cost

Cost

Cost

Cost

Cost

1

$10

$23

$33

$10

$23

$33

2

$10

$38

$48

$5

$19

$24

15

3

$10

$60

$70

$3

$20

$23

22

4

$10

$64

$74

$3

$16

$19

4

5

$10

$100

$110

$2

$20

$22

36

6

$10

$118

$128

$2

$20

$21

18

7

$10

$143

$153

$1

$20

$22

25

8

$10

$175

$185

$1

$22

$23

32

13-12

Option a

Year

No of cups

Price

Internet

Price

TR

1

2000

2.5

4000

2.5

15000

Cost

Interest forgone

12000

Monetary outlays

9,000

Economic Cost

21,000

Economic profit = TR-Economic Cost = 15000-21000 = -$6000

Water

Sugar

Lemons

Cups

Opp Cost

Economic Costs

0.01

0.02

0.03

0.02

0.1