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課程名稱︰經濟學(一)
課程性質︰選修兼A5通識
課程教師︰李曉雲
開課學院：
開課系所︰
考試日期（年月日）︰2013.01.11
考試時限（分鐘）：
是否需發放獎勵金：是
（如未明確表示，則不予發放）
試題 :
一、(13%)假設你在考慮二種電信公司手機資費方案，方案一，統一超商電信每月固定支付
177元，每分鐘再收費6.6元；方案二，中華電信每月固定支付183元，每分鐘再收費
4.8元。你每月使用手機打電話之需求為Q(D)=450-15P，其中P為每分鐘價格，Q為每月
講電話時間（分鐘）。
(1) 在這二種資費方案下，你每月各會打幾分鐘電話？(4%)
(2) 在這二種資費方案下，你的消費這剩餘各為多少？請繪圖說明並計算出數值。(6%)
(3) 你會選擇種資費方案，為什麼？
二、(14%)Answer the folloint questions based on the graph
(以Price為縱軸、Quantity為橫軸，圖中有兩條線，supply跟demand，supply線通過
(10,90)、(0,50)兩點，demand線通過(0,150)、(25,0)兩點)
(1) At the equilibrium price, what is the magnitude of the producer
surplus?(3%)
(2) If the government imposes a price floor of $120 in this market, how
much consumer surplus will be in the market?(3%)
(3) If the government imposes a price ceiling of $70 in this market, then
how much consumer surplus will be in the market?(3%)
(4) Explain why the graph that is shown verifies the fact that the market
equilibrium(quantity) maximizes the sum of producer and consumer
surplus.(5%)
三、(15%)政府為了激發地方特色產業創新轉型，提升其商品附加價值與整體產業競爭優勢
，提出〔地方特色產業輔導計畫〕，每案政府補助上限50%。假設政府以稅收來支應補
貼，而每案平均下來，政府對業者每一商品補貼$3。
(1) 請繪圖說明這對消費者剩餘、生產者剩餘、及總剩餘的影響？(10%)
(2) 補貼是否會造成無謂損失，請說明之。(5%)
四、(16%)Suppose that a maraket is described by the following supply and demand
equations: Q(S)=2P，Q(D)=500-3P
(1) Solve for the equilibrium price and the equilibrium quantity.(4%)
(2) Suppose that a tax of T is placed on sellers, so the new supply
equation is Q(S)=2(P-T). Solve for the new equilibrium. What happens to
the price received by sellers, the price paid by buyers, and the
quantity sold?(6%)
(3) Solve for tax revenue and deadweight loss as a function of T.(6%)
五、(19%)Use the graph to answer the following questions about textile.
(以Price為縱軸、Quantity為橫軸，圖中有三條線，Domestic supply通過(0,2)、
(65,15)，Domestic demand通過(0,22)、(50,12)，World price是P=15的水平線)
(1) What is the quantity of textile exported after trade is allowed?(3%)
(2) What are the changes in consumer surplus, producer surplus, and total
surplus because of trade?(6%)
(3) The government decides to subsidize the export of textile by paying a
certain amount for each ton sold abroad. How does it affect consumer
surplus, producer surplus, government revenue, and total surplus? Is it
a good policy form the standpoint of economic efficiency?(10%)
六、(6%)社會上有100人，每人對路燈的需求曲線皆為如下圖所示，每一支路燈的成本為
100，請問社會最適的路燈供給量是多少？請寫出計算過程。
(以Price為縱軸、Quantity為橫軸，需求曲線通過(0,10)、(10,0)兩點)
七、(6%)請以公有資源說明政府高速公路收費方式從收費站收費改為高速公路匝道按里程
收費對社會福利有何影響？有人說政府這樣的做法是在跟民眾搶錢，你覺得呢？
八、(11%)Please answer the following questions:
(1) Explain why the average total cost curve is U-shaped?(5%)
(2) If the city government implements a lump-sum tax of NT$3,000,000 on
each producer of cars. Which of the following curves- average fixed
cost, average varibale cost, average total cost, and marginal cost-
would shift as a result of the lump-sum tax? Why? Show this in a
graph.(6%)
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