課程名稱︰經濟學一 課程性質︰A5通識* 課程教師︰李曉雲 開課學院：社會科學院 開課系所︰經濟系 考試日期（年月日）︰2011/01/09 考試時限（分鐘）：120分鐘(9:30-11:30) 寫完即可交卷 是否需發放獎勵金：是 （如未明確表示，則不予發放） 試題 : ※ 本份試題共八題(二面)，請同學於作答前務必檢查。 ※ 請於答案卷上作答，無須抄題。 ※ 滿分100分。 一、(12%) Given below are the price and income elasticities of demand for coffee in two areas, rural and urban. ┌───────────────┬─────┬─────┐ │ │ Rural │ Urban │ ├───────────────┼─────┼─────┤ │Price Elasticities │ -1.5 │ -1.2 │ ├───────────────┼─────┼─────┤ │Income Elasticities │ 0.75 │ 1.5 │ ├───────────────┼─────┼─────┤ │Cross Elasticities with milk │ -0.5 │ -0.2 │ └───────────────┴─────┴─────┘ (1) Calculate the % change in demand for coffee if the price of coffee decreases by 5% in the rural areas and 10% in the urban areas. (4%) (2) Calculate the % change in demand for coffee, if the income of rural households decreases by 10% and of urban households increases by 5%. (4%) (3) Calculate the % change in price for milk in the rural areas if an increase in coffee demand is 10%. What is the relationship between coffee and milk? (4%) 二、(8%) 在台灣大麻為禁止交易的毒品，在加拿大則是合法交易，但課以重稅。請 以市場供需圖形分析此二種政策對於各國大麻市場價格與產量之影響，並試述其 優缺點。 三、(10%) There are four consumer willing to pay the following amounts for haircuts: Jelly: $700 Oprah: $200 Sally Jessy: $800 Montel: $500 There are four haircutting businesses with the following costs: Firm A: $300 Firm B: $600 Firm C: $400 Firm D: $200 Each firm has the capacity to produce only one haircut. (1) For efficiency, how many haircuts should be given? Please draw the figure and explain it. (6%) (2) How large is the maximum possible total surplus (Note that total surplus is the sum of consumer surplus and producer surplus). (4%) 四、(16%) Suppose the supply and demanded schedule of shoes is as follows: ┌─────────┬─────────┬─────────┐ │Price Per Pair │Quantity Demanded │Quantity Supplied │ ├─────────┼─────────┼─────────┤ │ $200 │ 12 │ 3 │ ├─────────┼─────────┼─────────┤ │ $400 │ 10 │ 5 │ ├─────────┼─────────┼─────────┤ │ $600 │ 7 │ 7 │ ├─────────┼─────────┼─────────┤ │ $800 │ 5 │ 10 │ ├─────────┼─────────┼─────────┤ │ $1000 │ 3 │ 12 │ └─────────┴─────────┴─────────┘ (1) If a price ceiling of $500 is imposed by the government, then what will happen in shoes market? Surplus or shortage of shoes? How much? Please draw the figure and point out the total surplus. (8%) (2) If a price floor of $900 is imposed by the government, then will there be a surplus or shortage of shoes? How much? Please draw the figure and point out the total surplus. (8%) 五、(12%) 假設汽油市場的供需函數為： Qs= -20 + P ; Qd= 100 - 0.5P 因物價大幅上漲，政府決定每公升汽油給予5元的從量補貼。請問 (1) 補貼前後之市場均衡價格與數量。 (6%) (2) 每公升汽油消費者和廠商各獲得多少補貼？ (6%) 六、(12%) Suppose the government levies a tax of the vertical distance from point A to point B. Using the graph shown, determine the value of each of the following: 圖在這：http://ppt.cc/xCb- (1) equilibrium price and total surplus before the tax (6%) (2) total surplus (consumer surplus + producer surplus + tax revenue) and deadweight loss after the tax (6%) 七、(22%) 台灣為一開放的經濟體系，設冷氣機消費市場為完全競爭市場，國外生產者以 每台 25,000 元的價格無限供應給國內消費者，台灣冷氣機市場的供給函數為 Qs= -10 + 0.001P，需求函數為 Qd= 55 - 0.001P。試求： (1) 台灣冷氣機市場的均衡價格與數量、進口量、社會總福利。 (8%) (2) 若政府對進口冷氣機課徵 5,000 元的從量稅（即關稅），請計算課稅後台灣冷 氣機市場的均衡價格與數量、進口量、社會總福利。 (8%) (3) 若政府在課徵關稅的同時又規定進口配額2台，求此措施後的市場均衡價格與數 量。 (6%) 八、(8%) 某商品市場供需如下： Qd= 70 - 5P ; Qs= -10 + 5P (1) 假設每單位的產量會釋放出2單位的汙染，且每單位的汙染會對社會產生1元的 成本，請計算考慮汙染後的社會總剩餘。 (4%) (2) 假設政府現在對每單位的產量課2元的稅，請計算新的社會總剩餘。(4%) --

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