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3. Problem: \"Economies of Scale” (9 points) Please use the data below to answer

ID: 1190364 • Letter: 3

Question

3. Problem: "Economies of Scale” (9 points)

Please use the data below to answer the following questions:

Q

LRATC

0

$120

10

$107

20

$95

30

$85

40

$76

50

$69

60

$63

70

$60

80

$60

90

$60

100

$60

110

$60

120

$61

130

$64

140

$68

150

$75

160

$83

170

$94

180

$109

a). Construct a graph for the long run average total cost (LRATC). Use the quantity (Q) data for the X-axis.

b). Over what range of output does this firm experience: (a) economies of scale; (b) constant returns; and (c) diseconomies of scale?

Q

LRATC

0

$120

10

$107

20

$95

30

$85

40

$76

50

$69

60

$63

70

$60

80

$60

90

$60

100

$60

110

$60

120

$61

130

$64

140

$68

150

$75

160

$83

170

$94

180

$109

Explanation / Answer

a) The following figure plots LRATC vis-a-vis Quantity, such that the horizontal axis represents quantity and the vertical axis represents LRATC.

b)

The firm experiences economies of scale for the output range 0-70, as firm's LRATC falls over this range.

The firm experiences constant returns for the output range 70-110, as firm's LRATC stays constant over this range.

The firm experiences diseconomies of scale for the output range 110-180, as firm's LRATC rises over this range.

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