Question

In: Economics

Assume that there are 50 units of an exhaustible resource that can be used in either...

Assume that there are 50 units of an exhaustible resource that can be used in either period 1 or period 2. The demand curve is given by: P=100-Q. The interest rate is 50%. The industry is perfectly competitive. There are no costs of extraction. a) Solve for the efficient level of output and price in period 1 and period 2 b) Suppose that the government imposes a tax of $30 per unit. Solve for the level of output and price in both period 1 and period 2. c) Suppose that the government imposes a tax of $30 on period 1 sales and $45 on period 2 sales. Solve for the level of output and price in both period 1 and period 2 d) Is the tax described in part (b) or in part (c) more efficient (causes less deadweight loss)? Explain.

Solutions

Expert Solution

a) Suppose efficient quantity in period 1=Q then in priod 2=50-Q for efficient quantity Revenue=P1Q+P2(50-Q)

Profit1=(100-Q)*Q;Profit2=(100-(50-Q))(50-Q)-(50-Q)*(100-Q)*0.5(Interest) Total Profit=100Q-Q2+(2500-Q2)-0.5(5000-150Q+Q2) for maximizing Profit differentiating dProfit/dQ=175-5Q=0 this gives Q=35 hence in Period 1 Q=35 P=65 and in 2 Q=15 P=(100-15)=85

b)If tax of $30 introduced then Profit1=(100-Q-30)*Q;Profit2=(100-(50-Q)-30)(50-Q)-(50-Q)*(100-Q)*0.5(Interest) Total Profit=70Q-Q2+(1000-Q2+30Q)-0.5(5000-150Q+Q2) dProfit/dQ=175-5Q=0 this gives Q=35 hence price and quantity will remains as previous

c) with tax as 30 and 45 Total Profit= 70Q-Q2+(250-Q2+45Q)-0.5(5000-150Q+Q2) differentiating will give Q=38 hence hence in Period 1 Q=38 P=62 and in 2 Q=12 P=(100-12)=88

d) for Efficiency total gain in case b=35*65+15*85-0.5*15*65+30*50=4562.5 for case c=38*62+12*88-0.5*12*62+30*38+45*12=4720 hence part c is more efficient


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