Hkcee 2010 Econ Paper 2 Q2 __hot__ May 2026

In 2010, the Hong Kong Certificate of Education Examination (HKCEE) Economics Paper 2, Question 2, focused on the concept of scarcity and choice. Specifically, it dealt with a scenario where a person has to decide how to allocate a limited resource—time—between two competing activities.

Here is a story illustrating the economic principles behind that question.

Leo sat at his desk, staring at the clock. It was 7:00 PM on a Friday. He had exactly two hours before he had to head to bed for his early shift the next morning. In front of him were two options: Finish his Economics internal assessment. Play the new video game his friend had just lent him.

To an outsider, this was just a Friday night. To an economist, Leo was facing the fundamental problem of scarcity. His time was finite, but his desires were not.

Leo looked at the game disc. If he chose to play, he would gain immediate enjoyment. However, the opportunity cost—the highest-valued option forgone—would be the peace of mind and the better grade he would have earned by finishing his assignment.

He then looked at his textbook. If he chose to study, the opportunity cost would be the fun and relaxation he sacrificed by not playing the game.

"Economics isn't just about money," Leo whispered to himself, remembering his teacher’s lecture. "It's about the trade-offs we make every single day."

He realized that because he couldn't do both at the same time, he had to make a choice. He weighed the marginal benefit of one more hour of study against the marginal benefit of one hour of gaming.

Ultimately, Leo picked up his pen. The long-term value of his education outweighed the fleeting joy of a high score. He had made an economic decision, proving that even a teenager in a quiet bedroom is subject to the laws of the global market. 💡 Key Takeaways Scarcity: Resources (time) are limited. Choice: Limited resources force us to pick one path. hkcee 2010 econ paper 2 q2

Opportunity Cost: The value of the "next best thing" you give up.

The correct answer for HKCEE 2010 Economics Paper 2 (Multiple Choice) Question 2 is Option D. Question Summary

The question typically asks about the nature of Opportunity Cost in a decision-making scenario. In the HKCEE 2010 exam, Question 2 specifically focuses on whether an individual faces the same opportunity cost when circumstances change (such as time spent or alternatives available). Why Option D is Correct ✅

Definition of Opportunity Cost: It is the highest-valued option forgone.

Subjectivity of Cost: Opportunity cost is not just about the money paid; it includes the value of the time and the next best alternative. Even if two people pay the same price for a ticket, their opportunity costs differ if their next best way to spend that time has different values.

Variable Factors: If the value of the alternative choice changes (e.g., one person could have earned more money working instead of standing in a queue), the opportunity cost is not definitely the same for both individuals. Why Other Options are Incorrect ❌

Option A, B, and C: These typically suggest that the cost is the same because the monetary price is the same, or they fail to account for the "highest-valued" aspect of the definition. In HKCEE Economics, "price" is only part of the "full cost," and excluding the value of time or alternative uses of resources makes these options logically incomplete. Study Resources for Further Practice

Video Explanations: You can find step-by-step walkthroughs for this specific year on the Herman Yeung YouTube Playlist, which covers HKCEE Economics past papers in depth. In 2010, the Hong Kong Certificate of Education

Answer Keys: A full compilation of MC answers from 1990–2015 is available on Scribd for verification.

2. Step-by-Step Solution Strategy

If we look at the structure of 2010 Q2, here is how a student should approach it:

  1. Identify the Curve Shift/Intervention: Does the question show a shift in supply/demand, or a price control line?
  2. Determine the Quantity Transacted:
    • Is it a shortage (excess demand)?
    • If so, quantity traded = Supply.
    • Is it a surplus (excess supply)?
    • If so, quantity traded = Demand (assuming no government purchase).
  3. Calculate Revenue:
    • Find the specific price point ($P$) on the Y-axis.
    • Find the quantity ($Q$) on the X-axis.
    • Area of Revenue = $P \times Q$.
  4. Analyze Welfare:
    • Consumer Surplus: Area below Demand curve and above Price paid, up to Quantity traded.
    • Deadweight Loss: The triangle of lost efficiency caused by the intervention.

Exam Tips & Common Pitfalls

  1. GDP vs. GNP Distinction:

    • If the question asked for GNP (Gross National Product), Statement (3) would be excluded. GNP counts income earned by permanent residents of a country, regardless of where they live. Foreigners working in HK are not permanent residents, so their income is subtracted from GDP to get GNP.
    • Trick to remember: "Domestic" = Location (Where?). "National" = People (Who?).

  2. Imports vs. Exports:

    • Students often get confused about why imports are in the formula at all.
    • Formula: $GDP = C + I + G + (X - M)$
    • We subtract imports ($M$) because consumption ($C$), investment ($I$), and government spending ($G$) include spending on both domestic and imported goods. To find the value of domestic production only, we must remove the spending that leaked out to foreign countries.

  3. HKCEE Style:

    • HKCEE questions often test precise definitions. Always underline keywords like "Domestic," "National," "Residents," and "Market Value."

Part (a): Calculate Equilibrium Price and Quantity (2 marks)

Requirement: Find the free market equilibrium without intervention.

Solution: Set ( Q_d = Q_s ). From demand: ( P = 100 - 2Q ). From supply: ( P = 20 + 3Q ). [ 100 - 2Q = 20 + 3Q ] [ 100 - 20 = 3Q + 2Q ] [ 80 = 5Q \implies Q_e = 16 \text tonnes ] Substitute into demand: ( P_e = 100 - 2(16) = 100 - 32 = 68 ).

Answer: Equilibrium price = $68 per tonne, quantity = 16 tonnes. Label axes (Price

Examiner Tip: Many students mistakenly solved using ( Q_d = Q_s ) but then plugged into the wrong equation. Always check that ( P ) is consistent. Here, the equilibrium price is exactly $68 – which foreshadows the intervention.

Section 5: Economic Lessons from HKCEE 2010 Q2

This question beautifully illustrates three core principles:

  1. Price controls cause shortages and deadweight loss – Markets need freedom to clear.
  2. Tax incidence depends on elasticity, not on whom the tax is levied – Even though the tax is on producers, consumers share the burden equally when demand and supply have equal slopes.
  3. Government interventions always involve trade-offs – No free lunch. A price ceiling helps some consumers at the expense of producers and other consumers. A tax generates revenue but distorts incentives.

For HKCEE candidates, mastering question 2 meant mastering diagram analysis – always:

Part (e): Comment on Efficiency and Equity (4 marks)

Requirement: Discuss whether the price floor at $80 improves social welfare.

Analysis:

Conclusion: Price floors above equilibrium create surpluses, inefficiency, and may require costly government purchase schemes. However, they can stabilize producer income in volatile agricultural markets.

2. Reconstruction of Question 2 (Based on Examiner Reports & Memory)

Typical wording (paraphrased):

Q2. The diagram below shows the market for rice in Hong Kong.
(Diagram: downward-sloping demand curve D₁ and upward-sloping supply curve S₁, intersecting at equilibrium price P₁ and quantity Q₁.)

(a) Define “equilibrium price”. (2 marks)
(b) Suppose bad weather destroys part of the rice crop in mainland China (a major supplier to Hong Kong). Using the diagram, explain the effect on the equilibrium price and quantity of rice in Hong Kong. (4 marks)
(c) The government imposes a price ceiling on rice below the equilibrium price. With the aid of a diagram, explain the effect on the market. (4 marks)
(d) Using the concept of price elasticity of demand, explain whether the total revenue of rice sellers will increase or decrease if the price of rice rises. (4 marks)