In to the figure below, PW stands for world price of goods and the number Q on the horizontal axis is in thous…

Question

In to the figure below, PW stands for world price of goods and the number Q on the horizontal axis is in thousands. When the tariff is imposed, the government collects ① and the deadweight cost caused by the tariff equals ② .
(A) ①$50,000 ②$25,000
(B) ①$60,000 ②$10,000
(C) ①$10,000 ②$50,000
(D) ①$220,000 ②$30,000

Accepted Answer

正確答案為 A。 關稅收入＝稅額×進口量；無謂損失＝兩個小三角形面積之和。圖中Q單位為千，需乘1000換算。 (A) 【關稅收入與DWL計算】關稅收入：稅額$5×進口量10,000單位=$50,000；無謂損失：生產扭曲三角形½×5×5,000=$12,500＋消費扭曲三角形½×5×5,000=$12,500，合計$25,000。完全符合圖示。 (B) 【計算錯誤】①$60,000計算錯誤：若以進口量12,000計算則偏高；②$10,000低估DWL，未正確識別兩個三角形面積之和。

In to the figure below, PW stands for world price of goods and the number Q on the horizontal axis is in thousands. When the tariff is imposed, the government collects ① and the deadweight cost caused by the tariff equals ② .

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