In: Economics
Let us calculate the emissions levels without regulations
Set MACA=0
400-2eA=0
eA=200
Now, set MACB=0
600-3eB=0
eB=200
7A)
Required level of emissions=eA+eB=200
So, eB=200-eA
Set MACA=MACB for optimal reduction
400-2eA=600-3eB
Set eB=200-eA
400-2eA=600-3*(200-eA)
400-2eA=600-600+3eA
5eA=400
eA=80 (Optimal number of emissions for firm A under regulation)
7B)
We have derived in part 7A that
eB=200-eA=200-80=120 (Optimal number of emissions for firm B under regulation)
7C)
MACA at optimal emission=MACA=400-2eA=400-2*80=$240
MACB at optimal emission=MACB=600-3eA=600-3*120=$240
Optimal effluent tax=MACA=MACB=$240
7D)
Abatement by firm A=200-80=120
We know that
Emission by a firm+Abatement by a firm=Emission by firm without regulation
eA+Aa=200
eA=200-Aa
Set eA=200-Aa in MACA relation
MACA=400-2eA=400-2*(200-Aa)=2Aa
Total Cost of abatement (TACA) is given as
Total Cost for firm A=TACA+Effluent tax=14400+(200-120)*240=$33600
7E)
Abatement by firm B=200-120=80
We know that
Emission by a firm+Abatement by a firm=Emission by firm without regulation
eB+Ab=200
eB=200-Ab
Set eB=200-Ab in MACB relation
MACB=600-3eB=600-3*(200-Ab)=3Ab
Total Cost of abatement (TACB) is given as
Total Cost for firm B=TACB+Effluent tax=9600+(200-80)*240=$38400