There are two factories in a small town. Both of them emit
carbon dioxide into the air. Factory 1 currently emits 120 tons per
month, whereas factory 2 currently emits 160 tons per month. The
technology of each factory is different, so their costs of reducing
emissions are different as well. The tables below show the costs of
reducing emissions in increments of 20 tons per month for each
factory:
Total cost of reducing emissions by 20 tons/month | $50 |
Total cost of reducing emissions by 40 tons/month | $150 |
Total cost of reducing emissions by 60 tons/month | $270 |
Total cost of reducing emissions by 80 tons/month | $410 |
Total cost of reducing emissions by 100 tons/month | $570 |
Total cost of reducing emissions by 20 tons/month | $20 |
Total cost of reducing emissions by 40 tons/month | $60 |
Total cost of reducing emissions by 60 tons/month | $110 |
Total cost of reducing emissions by 80 tons/month | $200 |
Total cost of reducing emissions by 100 tons/month | $300 |
The existing technology does not allow for reductions in emissions
beyond 100 tons/month. That is, the most each factory could reduce
its emissions by is 100 tons/month.
Suppose the government in this town would like to cut monthly emissions to half of the current level. To do that, the government has decided to impose a tax for every 20 tons of pollution per month emitted by a factory. To achieve its desired goal (but not exceed the goal), the tax would have to be set between $____________ and $____________ for every 20 tons/month. (The first number should be the lower end of the tax, and the second number should be the higher end of the tax.)
Current Emissions
Factory 1 = 120 tons
Factory 2 = 160 tons
Total Emissions = 120 + 160 = 280 tons
Now Government want to reduce emission to 50%
i.e = 50% of 280 tons = 140 tons
Now For both,
Tons reduced per month | Factory 1 Cost | Marginal Cost factory 1 | Factory 2 Cost | Marginal Cost factory 1 |
20 tons | 50 | 50 | 20 | 20 |
40 tons | 150 | 100 | 60 | 40 |
60 tons | 270 | 120 | 110 | 50 |
80 tons | 410 | 140 | 200 | 90 |
100 tons | 570 | 160 | 300 | 100 |
So MArginal Cost of 100 will reduce it by 140 tons - 40 from Factory1 and 100 from factory 2
i.e Tax of 100 pe 20 tons can reduce it by 140 tons
so minimum is 100
If we go beyind 120 than tons reduec will be 160 as FActory 1 will reduce by 60 tons
So Range = 100 - 120 dollars per 20 tons
100 and 120 excluding
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