The scale of a project should be increased as long as the ___ exceeds the __.
A. total social benefit; total social cost
B. total social benefit; marginal social cost
C. marginal social benefit; total social cost
D. marginal social benefit; marginal social cost
Answer:
With no policy, each firm emits 120 tons of carbon. As H reduces its emissions from
120 to 0, its marginal abatement cost (MAC) rises from $0 to $480; as L reduces its
emissions from 120 to 0, its MAC rises from $0 to $120. The MD of a ton of carbon is
$96. The tax per ton is T.
Refer to Figure 2.2. Under a tradable permits treaty where the total number of permits is
120, if country L is unaffected by global warming, country L should still agree to the
treaty if it is given at least ____ permits.
A. 24
B. 48
C. 72
D. 96
Answer: