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為了進一步拓展國際影響力，培養具備經濟學思維與全球視野的青年人才，倫敦政治經濟學院經濟學會（LSE規模最大、最具影響力的學術社團之一）聯合LSE教授團隊與阿思丹國際競賽平臺合作共同推出權威性的全球賽事——LSE 經濟學挑戰?（LSESU Economics Society Economics Challenge）。

賽事由 LSE 經濟學學會嚴格命題與學術審核，融合高中與大學層次的經濟學內容，旨在為全球優秀高中生提供與LSE學術體系接軌的機會，激發他們的研究熱情與批判思維，成為邁向世界頂尖學術殿堂的重要舞臺。

宏觀經濟學 Macroeconomics

① If the consumer price index was 75 in the base year? and 130 in the following year, then the inflation rate was

a.57% ? ? ?b.58% ? ? ?c.73% ? ? ?d.42%

Explanation:

Inflation rate = percentage change of CPI = ((130/75)-1)x 100%

?

②?Assume the MPC = 0.75 and considering only the multiplier effect, if government taxation increases by $60

billion, then national income will

a.Decrease 45 billion. ? ? ?b.Decrease 240 billion.

c.Increase 240 billion. ? ? ?d.Decrease 180 billion.

Explanation:

multiplier = 1/(1-MPC) = 1/ (1-0.75) =4.

Potential change in national change income = multiplier x tax change x MPC = 4x60x0.75=180

微觀經濟學 Microeconomics

①?Ms. Jane resigned from her job with a $60,000 annual salary to open a coffee shop in her apartment. Her

coffee shop’s annual revenue is $80,000, and her costs for coffee beans, facility maintenance, water, and

electricity amount to $30,000 per year. Should Ms. Jane be satisfied with her coffee shop’s annual profit?

a.Yes, because her accounting profit is $50,000

b.Yes, because her economic profit is $50,000

c.No, because her economic loss is $20,000

d.No, because her economic loss is $10,000

Explanation:

Economic profit = Accounting profit – Implicit cost = $80,000 - $30,000 - $60,000 = -$10,000.

?

②Dawn, Inc. produces and sells notebook in a perfectly competitive market at the price of $3 per unit and hires all the workers it needs at the wage rate of $23. Assume worker is the only variable input, and the firm’s production schedule is provided in table.

Determine the profit-maximizing number of workers the firm should hire.

a.1 ? ? ?b.2 ? ? ?c.3 ? ? ?d.4

Explanation:

The firm maximizes profit where the value of the additional worker’s contribution (Marginal revenue) is just equal to orgreater than the wage(Marginal cost). Hiring a third worker would add only $21 of revenue while costing $23, leading to a loss. Thus, the profit-maximizing number of workers is 2.

定量基礎 Quantitative Foundations

①?The mean of 4, 6, 24, 14, 2 is

a.4 ? ? ?b.6 ? ? ?c.8 ? ? ?d.10

Explanation:

Mean equals to average, (4+6+24+14+2)/5=10

?

②?The mean of 4 number is 30. The mean of the smallest 3 of them is 20. If the range of the data is 42, what isthe mean of the largest 3?

a.34 ? ? ?b.36 ? ? ?c.42 ? ? ?d.48

Explanation:

The sum of all 4 numbers is 4×30=120.The sum of the smallest 3 is 3×20=60.So, the largest number is 120–60=60.Given the range is 42, the smallest number is 60–42=18.Thus, the two middle numbers must sum to 120–(18+60)=42.

The largest 3 numbers therefore sum to 42+60=102, giving a mean of 102÷3=34

1、哪些人可以參加LSE經濟學挑戰？

LSE經濟學挑戰適合9-12 年級學生參加，參賽者需以個人形式參與。

2、LSE經濟學挑戰賽報名費用多少？

240元/次（含考試注冊費、電子證書、評審費和考務費）。

3、LSE經濟?學挑戰賽可以以中文參與嗎？

目前LSE經濟學挑戰賽僅以英文作為參賽語言，參與者可以根據個人情況選擇線上或線下參與比賽。?