申論題

下列問題以中文或英文作答皆可，請標明題號,並寫下計算與推論過程,若無適當過程可能無法得到 完整分數。 四、 (20%) Suppose the Demand curve of product A is Qo= 40 - 2P, and the Supply curve is Qs=P+ 1.

(2) Suppose the government imposes a S3 Iump-sun tax on cach unit of product A. Please find the new equilibrium price and quantity. Who bears more of tax burden, and by how much? Use a graph to show the economic inefficiency and its amount.