課程名稱︰經濟學乙 課程性質︰政治系三組共同必修 課程教師︰江瑞祥 開課學院：社會科學院 開課系所︰政治系 考試日期（年月日）︰97年11月21日 考試時限（分鐘）：120分鐘+延長15分鐘 是否需發放獎勵金：please, thank you! 試題 : Midterm Exam 1.(5 pts.) Define opportunity cost. What is the opportunity cost to you of attending college? What was your opportunity cost of coming to exam today? 2.(20 pts.) The only two countries in the world, Alpha and Omega, face the following production possibilities frontiers. Alpha Omega Popcorn | Popcorn | | 300| | | | | | | 150| | | | | | |__________________ |_____________________ 0 250 0 100 Peanuts Peanuts 由於畫不出斜線的關係,請自行連接與150和250二點相交的斜線, 以及連接與300和100二點相交的斜線,感謝~ a) Assume that each country decides to use half of its resources in the production of each good. Show these points on the graphs for each country as point A. b) If these countries choose not to trade, what would be the total world production of popcorn and peanuts? c) Now suppose that each country decides to specialize in the good in which each has a comparative advantage. By specializing, what is the total world production of each product now? d) If each country decides to trade 100 units of popcorn for 100 units of peanuts, show on the graphs the gain each country would receive from trade. Label as B. 3.(20 pts.) Based on the demand-supply schedule described below, please answer the questions. ____________________________________________________________ Price of Burrito Quantity Demanded Quantity Supplied ------------------------------------------------------------ 0.0 500 125 ------------------------------------------------------------ 1.0 400 175 ------------------------------------------------------------ 1.5 350 200 ------------------------------------------------------------ 2.0 300 225 ------------------------------------------------------------- 2.5 250 250 ------------------------------------------------------------- 3.0 200 275 -------------------------------------------------------------- 3.5 150 300 -------------------------------------------------------------- 4.0 100 325 --------------------------------------------------------------- 5.0 0 350 ________________________________________________________________ a) What is equilibrium price and quantity? How big is the total economic surplus? b) With a price ceiling of $1.50 per burrito, what is the new equilibrium price and quantity? c) Based on b), who are better off and worse off? d) Based on c), how big is the new total economic surplus and how big the deadweight loss? 4.(10 pts.) Describe the effects of the following events on the supply and/or demand for raisin bran cereal. a) The price of raisin increases. b) The price of milk decreases. c) The price of raisin increases and the price of milk decreases. 5.(25 pts.) Jolin has a budget of $120 a week that she spends on chocolate and music CDs. Let the price of chocolate be Pc=$2 and the price of a music CD be Pcd=$6. a) Draw her budget line on a(preferably large)graph with CDs on the X-axis. b) Assuming that she buys 30 chocolates at her optimum, draw her typical indifference curve at her optimum bundle on the same graph. Label the optimum as A. What is the marginal rate of substitution at point A? Now suppose the price of a CD become cheaper at $4. Yet, on her optimum, she continues to consume the same amount of chocolate, that is, 30 chocolates. c) Draw her new budget line on the same graph. d) Show a typical indifference curve consistent with her new optimum consumption bundle. Label as B. e) Show the substitution and income effects for the consumption of music CDs due to the price change in music CDs as mentioned above. 6.(20 pts.) You won a small town movie theatre. You currently charge $5 per ticket for everyone who comes to your movies. Your friend who took an economics course in college tells you that there may be a way to increase your total revenue. Given the demand curves shown, answer the followling questions. Adult Demand Child Demand Price| Price| $10| $10| 9| 9| 8|------ 8| 7| | 7| 6| | 6|---- 5|--------- 5|---------- 4| | | 4|---------------- 3| | | 3|---------------------- 2|------------ 2| | | | | 1|_____|__|__|______ 1|___|_____|_____|_____|_________ 0 40 50 60 Quantity 5 10 15 20 25 30 35 40 Quantity 我盡力畫了> <,附上座標Adult Demand有標出三個點(Quantity,Price)為 (40,8);(50,5);(60,2),而Child Demand有標出四個點為(10,6);(20,5);(30;4);(40;3) 自己畫完整一點吧~~~:p a) What is your current total revenue for both groups? b) The elasticity of demand is more elastic in which market? c) Which market has the more inelastic demand? d) What is the elasticity of demand between the prices of $5 and $2 in the adult market? Is this elastic or inelastic? e) What is the elasticity of demand between $5 and $3 in the children's market? Is this elastic or inelastic? -- 倘若說放一次手 就像咳一個嗽 我又何苦在乎得不到的溫柔 我坐在公路的出口 等待天黑以後 無邊的寂寞 連想你都是種殘酷切磋 我目送沿海的日落 緊抱一個醉生夢死的枕頭 游不出回憶卻學不會放手 怎麼走 SHE <沿海公路的出口> --

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