Questions
1. A firm produces bicycles at the following levels of production:
Workers Total Product Marginal Product Average Product

- Complete the table with MP and AP calculations.
- At what number of workers does diminishing returns begin?
- Explain what happens to marginal and average product in this case.
2. For each scenario, calculate the elasticity and explain its type:
- When the price rises from $100 to $120, the quantity demanded falls from 50 to 40 units.
- As the price declines from $30 to $25, the quantity supplied decreases from 300 to 240 units.
- When the price of product A increases from $20 to $24, the quantity demanded of product B rises from 30 to 36 units.
- If the price of product X drops from $15 to $12, the quantity demanded of product Y decreases from 40 to 34 units.
3. A perfectly competitive firm faces the following cost and revenue structure. The market price is $400 per unit.


- Complete the profit column.
- What is the profit-maximizing quantity and why?
- Given this profit level, what will happen in the long run? Explain the process and the final equilibrium.
4. The table below shows the supply and demand for electric vehicle batteries per month:
Price per unit Monthly Supply Monthly Demand

- What is the equilibrium price and quantity in this market? Explain your reasoning.
- Suppose a new government subsidy increases supply by 100 units at every price point. Calculate the new equilibrium price and quantity and explain why the direction of the price change makes intuitive sense.
5. Using real-world examples with specific pricing data, explain these pricing strategies:
- Penetration pricing in the streaming service industry
- Bundling in the software industry.
For each strategy, provide specific details about the pricing structure and explain the economic rationale behind its implementation.
6. In 2023, the European Union implemented a carbon border adjustment mechanism (CBAM). Using economic theory and early evidence:
Explain the expected market effects of this policy.
Analyze the initial impacts observed in affected industries.
Discuss what previous experiences with similar policies suggest about potential longterm outcomes. Support your analysis with specific data and examples.
Summary of the Assessment Requirements
The assessment consists of several microeconomics-based analytical questions designed to evaluate a student’s understanding of production theory, elasticity, market structures, supply–demand equilibrium, pricing strategies, and contemporary policy analysis. Students must apply formulas, interpret economic relationships, and explain real-world implications.
The key requirements include:
1. Production Theory
- Complete the production table by calculating Marginal Product (MP) and Average Product (AP).
- Identify where diminishing marginal returns begin.
- Explain the behavior of MP and AP as input usage increases.
2. Elasticity Calculations
- Compute price elasticity of demand, price elasticity of supply, cross elasticity of demand, and identify elasticity types (elastic/inelastic/substitutes/complements).
- Provide clear interpretation for each scenario.
3. Perfect Competition Profit Analysis
- Complete the profit column using cost and revenue data.
- Identify the profit-maximizing output using MR = MC logic.
- Explain the long-run adjustment process for perfectly competitive firms.
4. Market Equilibrium & Policy Impact
- Determine equilibrium price and quantity using supply–demand data.
- Recalculate equilibrium after a government subsidy shifts the supply curve.
- Interpret the direction of price and quantity changes.
5. Pricing Strategy Application
- Use real-world pricing examples to explain:
- Penetration pricing (streaming platforms)
- Bundling (software firms)
- Discuss pricing structures and the economic rationale behind each strategy.
6. Policy Analysis EU CBAM
- Explain expected market effects using economic theory.
- Analyse early evidence from affected industries in 2023.
- Discuss long-term implications drawing from similar historical policy experiences.
- Support with relevant data and examples.
How the Academic Mentor Guided the Student (Step-by-Step Approach)
The mentor followed a structured approach to help the student understand each section while ensuring proper application of economic theory, accurate calculations, and real-world alignment.
Step 1: Clarifying the Structure & Requirements
The mentor began by outlining the major components of the assessment and grouping them by topic production, elasticity, market structures, pricing, and policy.
This provided the student with a clear roadmap and prevented confusion across different economic concepts.
Step 2: Completing MP and AP Calculations
The mentor:
- Reviewed formulas for MP = ΔTP / ΔL and AP = TP / L.
- Guided the student to fill the table step-by-step.
- Helped identify the point where MP starts to fall, indicating diminishing returns.
- Explained the typical pattern: MP rises, peaks, then declines; AP follows but peaks later.
This ensured the student understood both the mathematical and conceptual dimensions.
Step 3: Solving Elasticity Questions
The mentor:
- Demonstrated the midpoint formula for elasticity to avoid calculation errors.
- Helped classify each elasticity type (elastic/inelastic/substitute/complement).
- Encouraged explanations based on sign and magnitude, not just numbers.
This reinforced both analytical accuracy and economic interpretation skills.
Step 4: Perfect Competition Profit Analysis
The mentor guided the student to:
- Calculate profit using Profit = TR – TC.
- Locate the profit-maximizing quantity using the MR = MC rule.
- Discuss long-run outcomes such as entry/exit, zero economic profit, and efficient scale.
This linked short-run decisions to long-run market dynamics.
Step 5: Determining Equilibrium & Effects of Subsidy
The mentor’s guidance included:
- Setting Qd = Qs to identify equilibrium.
- Shifting the supply schedule to include the subsidy.
- Explaining the market logic: increased supply lowers price and increases quantity.
This helped the student connect mathematical adjustment with intuitive market behavior.
Step 6: Providing Real-World Pricing Strategy Examples
The mentor advised:
- Choosing real firms (e.g., Disney+, Netflix for penetration pricing; Microsoft 365 or Adobe for bundling).
- Including actual pricing data and describing how consumers react.
- Explaining managerial motives such as market capture, value perception, and marginal cost effects.
This strengthened practical application and critical thinking.
Step 7: Analysing EU CBAM (2023)
To support this policy section, the mentor:
- Explained the economic logic behind border adjustments (carbon pricing equalization).
- Helped interpret early market evidence from steel, cement, and aluminum trades.
- Connected conclusions to experiences from earlier carbon markets (EU ETS, California).
- Encouraged reference to data trends instead of unsupported claims.
This ensured the policy analysis was evidence-based and theoretically sound.
Step 8: Final Integration & Review
The mentor ensured that the student:
- Presented answers in a clear, structured format.
- Explained concepts concisely rather than only calculating.
- Maintained consistency in economic reasoning across all questions.
- Reviewed final responses for accuracy and clarity.
Final Outcome & Learning Objectives Achieved
By the end of the guided process, the student produced an analytically sound, well-structured solution.
The outcome demonstrated:
Skills Successfully Achieved
- Accurate calculation of production measures and elasticity.
- Understanding of marginal analysis and profit maximization.
- Ability to interpret supply demand adjustments and policy shocks.
- Application of pricing strategy theory to real markets.
- Analytical evaluation of modern environmental policy (CBAM).
- Clear written communication and structured economic reasoning.
Overall Learning Objectives Met
- Apply microeconomic theory to practical scenarios.
- Use formulas and graphs to support economic arguments.
- Analyse firm behavior under competitive market conditions.
- Interpret policy impacts using economic frameworks.
- Connect theory to real-world examples and evidence.
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