To Coal Coal FROM Valley Coaltown Junction Coalsburg Supply 50 30 60 70 Morgantown 30 5 35 20 20 80 10 Youngstown 100 Pittsburgh Demand 30 45 40 90 90 20 60 40 80 30 5 25 20 20 20 25 120 What is the improvement index for Youngstown to Coal Valley? O a. -70 O b. 130 O c. -80 O d. 160 O e. 100 27

To Coal Coal FROM Valley Coaltown Junction Coalsburg Supply 50 30 60 70 Morgantown 30 5 35 20 20 80 10 Youngstown 100 Pittsburgh Demand 30 45 40 90 90 20 60 40 80 30 5 25 20 20 20 25 120 What is the improvement index for Youngstown to Coal Valley? O a. -70 O b. 130 O c. -80 O d. 160 O e. 100 27

Principles of Economics 2e

2nd Edition

ISBN:9781947172364

Author:Steven A. Greenlaw; David Shapiro

Publisher:Steven A. Greenlaw; David Shapiro

Chapter13: Positive Externalities And Public Goods

Section: Chapter Questions

Problem 9RQ: In what ways (it) company investments in research and development create positive externalities?

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Question

To
Coal
Coal
FROM
Valley
Coaltown
Junction
Coalsburg
Supply
50
30
60
70
Morgantown 30
5
35
20
20
80
10
Youngstown
100
Pittsburgh
Demand
30
45
40
90
90
20
60
40
80
30
5
25
20
20
20
25
120
What is the improvement index for Youngstown to Coal Valley?
O a. -70
O b. 130
O c. -80
O d. 160
O e. 100
27

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