4. Efficiency in the presence of externalities Cars impose many external costs on society: carbon dioxide emissions that contribute to air pollution, congestion on roadways, and so on. Therefore, the market quantity of cars is not equal to the efficient quantity. The following graph shows the private demand for cars, the private supply of cars, and the social supply of cars, which incorporates both private costs and external costs. Use the black point (plus symbol) to indicate the market quantity. Next, use the purple point (diamond symbol) to indicate the socially optimum quantity. Note: Drop lines will extend to both axes automatically. DERIVATE QUARKET O5OCIAL SSOCIAL SPRVATE QUANTITY OF CARS From society's standpoint, the market is producing cars. This is an example of of resources. PRICE OF CARS

Essentials of Economics (MindTap Course List)
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ISBN:9781337091992
Author:N. Gregory Mankiw
Publisher:N. Gregory Mankiw
Chapter10: Externalities
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4. Efficiency in the presence of externalities
Cars impose many external costs on society: carbon dioxide emissions that contribute to air pollution, congestion on roadways, and so on. Therefore,
the market quantity of cars is not equal to the efficient quantity.
The following graph shows the private demand for cars, the private supply of cars, and the social supply of cars, which incorporates both private costs
and external costs.
Use the black point (plus symbol) to indicate the market quantity. Next, use the purple point (diamond symbol) to indicate the socially optimum
quantity.
Note: Drop lines will extend to both axes automatically.
DERIVATE
QUARKET
O5OCIAL
SSOCIAL
SPRVATE
QUANTITY OF CARS
From society's standpoint, the market is producing
cars. This is an example of
of resources.
PRICE OF CARS
Transcribed Image Text:4. Efficiency in the presence of externalities Cars impose many external costs on society: carbon dioxide emissions that contribute to air pollution, congestion on roadways, and so on. Therefore, the market quantity of cars is not equal to the efficient quantity. The following graph shows the private demand for cars, the private supply of cars, and the social supply of cars, which incorporates both private costs and external costs. Use the black point (plus symbol) to indicate the market quantity. Next, use the purple point (diamond symbol) to indicate the socially optimum quantity. Note: Drop lines will extend to both axes automatically. DERIVATE QUARKET O5OCIAL SSOCIAL SPRVATE QUANTITY OF CARS From society's standpoint, the market is producing cars. This is an example of of resources. PRICE OF CARS
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