Bangkok Airways: Pricing & Profits
Using Figure 1, at what quantity and price does Bangkok Airways achieve allocative efficiency?
Allocative efficiency occurs where Price = Marginal Cost. From Figure 1: Quantity = 300 passengers, Price = THB 18,000 (where AR/demand curve intersects MC curve).
Chiang Mai Airport now operates 24 hours. What negative externality is created by late-night and early-morning flights?
Noise pollution. Aircraft noise disrupts sleep and health of nearby residents, reducing their productivity and quality of life. This is a negative externality not reflected in ticket prices.
Using Table 1, calculate Japan's real GDP in 2019 using the GDP deflator.
Real GDP 2019 = (Nominal GDP / GDP deflator) × 100 = (5,120 / 100.61) × 100 = US$ 5,089 billion
Using Figure 3, what was the exchange rate in May 2017 and August 2017?
May 2017: 125 JPY per EUR. August 2017: 130 JPY per EUR.
Name TWO demand-side policies Japan could implement to stimulate real GDP growth.
1) Increase government spending (fiscal stimulus) 2) Lower interest rates (monetary expansion) 3) Increase money supply 4) Tax cuts to boost consumer spending 5) Infrastructure investment
Define "interdependence" in the context of oligopoly markets.
When firms in an oligopoly must consider the likely reactions and responses of rival firms before making pricing, output, or strategic decisions. Each firm's actions affect and are affected by competitors' actions.
Using Figure 2, calculate the difference in consumer surplus between early-morning flights (P=THB 9,000, Q=150) and midday flights (P=THB 15,000, Q=250).
Early-morning CS = ½ × 150 × (27,000 - 9,000) = ½ × 150 × 18,000 = 1,350,000. Midday CS = ½ × 250 × (27,000 - 15,000) = ½ × 250 × 12,000 = 1,500,000. Difference = 150,000 (midday has 150,000 MORE consumer surplus)
Using Table 1, calculate Japan's inflation rate between 2017 and 2019 using the CPI.
Inflation = ((105.5 - 104) / 104) × 100 = 1.44% (or approximately 1.4-1.5% over 2 years)
Using Figure 3, calculate the percentage change in the value of the yen (JPY) between May and August 2017.
May: 125 JPY/EUR, August: 130 JPY/EUR. Change = ((130-125)/125) × 100 = 4% depreciation of yen (more yen needed per euro = yen weakened)
Using an AD/AS diagram, explain how increased government spending would stimulate Japan's real GDP.
Increased gov't spending → aggregate demand increases (AD shifts RIGHT) → moves along AS curve → real GDP increases, price level rises. If economy has spare capacity, real output increases significantly with minimal inflation.
Using Figure 1, calculate the price elasticity of demand (PED) for Bangkok Airways tickets when price increased from THB 6,000 to THB 18,000.
PED = -1.5 (% change in quantity = -75%, % change in price = +200%, PED = -75/200 = -0.375... OR using arc method: (ΔQ/ΔP) × (P/Q) = approximately -1.5 elastic demand)
Using an externality diagram, explain how 24-hour airport operations create market failure.
MSC (social cost including noise) > MPC (private cost to airline). Market equilibrium at Qmarket where MPC = MSB. Social optimum at Qoptimum where MSC = MSB. Overproduction of flights → deadweight loss → market fails to account for noise pollution costs.
Japan's nominal GDP increased from US$4,930B (2017) to US$5,120B (2019) while population DECLINED from 126.97M to 126.63M. Explain ONE reason for this.
GDP per capita increased. Even though total population fell, productivity per worker rose → output per person increased → nominal GDP grew. OR: Inflation increased prices → nominal GDP rose even if real output was flat. OR: Exports increased in value.
Explain why a depreciation of the yen may NOT improve Japan's trade balance in the short term.
J-curve effect: In short term, import prices rise (in yen) but quantity demanded doesn't fall immediately → import costs increase → trade balance worsens. Export prices fall but quantity demanded takes time to increase → exports don't rise immediately. Only in long term do export volumes increase enough to improve trade balance.
Japan's population is declining. Evaluate whether demand-side policies alone can solve Japan's long-term growth problem.
PROS: Demand-side policies boost short-term growth, increase employment, raise consumer confidence. CONS: Declining population = shrinking labor force → long-term productivity concerns, aging population increases welfare spending, structural issues require supply-side reforms. CONCLUSION: Demand-side alone insufficient - needs supply-side policies (immigration, productivity improvements, innovation).
Using Figure 1, calculate the change in total revenue if Bangkok Airways moved from making normal profits (Q=300, P=THB18,000) to the profit-maximizing position (Q=200, P=THB24,000).
Normal profit TR = 300 × 18,000 = THB 5,400,000. Profit-max TR = 200 × 24,000 = THB 4,800,000. Change = -THB 600,000 (revenue DECREASES by 600,000)
Using a price ceiling diagram, explain why the THB 15,000 price ceiling improves access to tickets for travelers.
Price ceiling below equilibrium → creates shortage but lowers price → more consumers can afford tickets → quantity demanded increases → consumer access improves. However, quantity supplied decreases → shortage results.
Using Table 2, calculate Japan's trade balance in 2019.
Trade balance = Exports - Imports = 1,220 - 1,030 = US$ 190 billion (trade SURPLUS)
Using an international trade diagram, explain why yen depreciation may negatively impact EU firms.
Yen depreciation → Japanese exports become cheaper in EU → Japanese firms gain market share → EU firms lose competitiveness → EU export demand falls. EU firms' costs rise relative to Japanese competitors → EU firms' profits fall → may reduce investment and employment in EU.
Japan's national debt rose from 193.49% of GDP (2017) to 198.01% (2019). Evaluate whether increased government spending is a sustainable solution.
PROS: Stimulates growth, reduces unemployment, improves living standards. CONS: Increases debt burden, may crowd out private investment, unsustainable long-term, future generations bear cost, may cause inflation. EVALUATION: Spending must be targeted at productive investments (infrastructure, education) not consumption to generate future returns and justify debt.
The Thai government imposed a price ceiling of THB 15,000. Using Figure 1, calculate Bangkok Airways' profit per passenger at this price ceiling.
At P = THB 15,000, from Figure 1: AC ≈ THB 19,500. Profit per passenger = Price - AC = 15,000 - 19,500 = -THB 4,500 (LOSS of 4,500 per passenger)
Recommend ONE policy the Civil Aviation Authority could use to address noise pollution from 24-hour airport operations. Evaluate its effectiveness.
POLICY: Pigouvian tax on late-night flights OR noise regulations/curfews. EVALUATION: Tax internalizes externality → reduces quantity of night flights → reduces noise pollution. But may reduce airline profits and increase ticket prices. Curfews are simpler but less efficient. Best: Tax + compensation fund for residents.
Using Table 2 and an AD/AS diagram, explain why Japan's real GDP may have fallen in 2018 despite nominal GDP growth.
Oil imports surged from $76.55B (2017) to $98.82B (2018) due to oil price increase ($48.05 to $61.40/barrel). Higher import costs → increased production costs → AS shifted LEFT → price level rose, real output fell. Imports increased faster than exports → net exports fell → AD shifted LEFT → real GDP contracted.
Evaluate whether currency depreciation alone is an effective policy to solve Japan's economic problems.
PROS: Makes exports cheaper, potentially increases export demand, improves competitiveness. CONS: J-curve effect means short-term worsening of trade balance, doesn't address structural issues (aging population, low productivity), may cause inflation, harms importers. CONCLUSION: Depreciation alone insufficient - needs supply-side reforms, fiscal stimulus, structural changes.
Recommend a comprehensive policy package (combining demand-side AND supply-side policies) to address Japan's economic challenges.
DEMAND-SIDE: Fiscal stimulus (infrastructure investment), monetary expansion (lower rates). SUPPLY-SIDE: Immigration reform (increase labor force), education/training (boost productivity), R&D subsidies (innovation), deregulation (increase efficiency). EVALUATION: Combination addresses both short-term growth (demand) and long-term structural issues (supply). Infrastructure spending is most effective as it boosts both demand and supply.