Suppose that the world price for a good is 60 and the domestic demandand- supply curves are given by the following equations: Demand: P = 100 - 4Q Supply: P = 10 + 5Q a. How much is consumed? b. How much is produced at home? c. What are the values of consumer and producer surplus? d. If a tariff of 20 percent is imposed, by how much do consumption and domestic production change? e. What is the change in consumer and producer surplus? f. How much revenue does the government earn from the tariff? g. What is the net national cost of the tariff?