International Economics Exercise Solutions | KalviGavani

How to Use This Page

1. Solve every question on your own first — attempt the textbook exercises before reading the solutions below. 2. Compare your answer with the model answer given. Focus on the reasoning, not just the final line. 3. Note the exam tip boxes — they flag the most-tested points and common traps. 4. Use the Key Concepts recap before exams for a quick last-minute review.

Key Concepts (Quick Recap)

I. Choose the Best Answer

1. Who proposed the theory of absolute advantage? (a) David Ricardo (b) Adam Smith (c) J.S. Mill (d) Heckscher-Ohlin

Adam Smith, in his 1776 work The Wealth of Nations, argued that a country should specialise in producing goods where it has an absolute advantage — i.e., it can produce the good using fewer resources than other countries. This specialisation leads to higher total output and mutual gains from trade.

2. The theory of comparative advantage was given by (a) Adam Smith (b) David Ricardo (c) Alfred Marshall (d) Bertil Ohlin

Ricardo extended Smith's idea by showing that even if one country has an absolute advantage in all goods, trade is still beneficial if each country specialises in goods where it has a comparative advantage (lower opportunity cost). This was published in On the Principles of Political Economy and Taxation (1817).

3. Balance of Trade includes (a) Visible items only (b) Invisible items only (c) Both visible and invisible items (d) Capital transactions

The Balance of Trade records only the visible items — exports and imports of physical goods (commodities). It does not include services, income flows, or capital transfers. Those are recorded in the broader Balance of Payments.

4. Which of the following is an invisible item in trade? (a) Machinery exports (b) Software services exports (c) Petroleum imports (d) Automobile exports

Invisible items are services and income transfers that cannot be physically seen crossing borders — e.g., tourism, banking, insurance, IT services, and remittances. Physical goods like machinery, petroleum, and automobiles are visible items.

5. When a country imports more than it exports, the Balance of Trade is (a) Favourable (b) Unfavourable (deficit) (c) Balanced (d) Zero

If the value of imports of goods exceeds the value of exports of goods, the BOT is said to be unfavourable or in deficit. This means the country is spending more on foreign goods than it is earning from selling goods abroad.

6. Under a fixed exchange rate system, the exchange rate is determined by (a) Market forces of demand and supply (b) The central bank or government (c) The IMF alone (d) Foreign tourists

In a fixed exchange rate system, the government or central bank pegs the domestic currency to another currency (e.g., the US dollar) or a basket of currencies. The central bank intervenes in the forex market by buying or selling foreign currency to maintain the fixed rate.

7. Terms of trade is expressed as (a) (Pm / Px) × 100 (b) (Px / Pm) × 100 (c) (Px × Pm) / 100 (d) Px + Pm

Terms of Trade (TOT) = (Index of Export Prices / Index of Import Prices) × 100. If TOT > 100, the terms of trade are favourable (export prices are high relative to import prices). If TOT < 100, more exports are needed to buy the same quantity of imports.

8. Which of the following is an argument for protection? (a) Greater consumer choice (b) Infant industry argument (c) Economies of scale through competition (d) Lower prices for consumers

The infant industry argument, advocated by Alexander Hamilton and Friedrich List, states that new domestic industries need temporary protection from established foreign competitors until they achieve economies of scale and become competitive. Other arguments for protection include employment generation, diversification, and national security.

9. The current account of BOP includes (a) Foreign direct investment (b) Export and import of goods and services (c) External borrowing (d) NRI bank deposits

The Current Account records transactions in goods (visible trade), services (invisible trade), income (investment income, compensation of employees), and current transfers (remittances, gifts). FDI, external borrowing, and NRI deposits belong to the Capital Account.

10. Managed floating exchange rate means (a) The rate is entirely fixed by the government (b) The rate is freely determined by the market with no intervention (c) The rate is largely market-determined but the central bank intervenes occasionally (d) The rate is decided by the WTO

In a managed floating (or "dirty float") system, the exchange rate is primarily determined by market forces of demand and supply, but the central bank steps in to buy or sell foreign currency to smooth excessive volatility or achieve macroeconomic objectives. India currently follows a managed floating exchange rate regime.

II. Fill in the Blanks

1. Trade between two countries is called international trade (or external trade).

2. The theory of comparative advantage was propounded by David Ricardo.

3. Balance of Trade records only visible items.

4. When export prices rise relative to import prices, terms of trade become favourable.

5. The current account of BOP records trade in goods and services.

6. Exchange rate that is determined by market forces without government intervention is called flexible (or floating) exchange rate.

7. The infant industry argument justifies temporary protection for new domestic industries.

8. Bilateral trade involves two countries.

9. The formula for terms of trade is (Px / Pm) × 100.

10. When imports exceed exports, the balance of trade is said to be unfavourable (or adverse / in deficit).

III. True or False

State whether each statement is True or False. If False, provide the correction.

IV. Match the Following

V. Answer Briefly

1. Define international trade. How does it differ from internal trade?

International trade is the exchange of goods and services between countries. It differs from internal trade in the following ways:

2. What is absolute advantage? Explain with an example.

Absolute advantage refers to a country's ability to produce a good using fewer resources (or at lower cost) than another country. Proposed by Adam Smith, it means a country is the most efficient producer of that good. Example: Suppose Country A can produce 100 units of cloth with 10 workers, while Country B needs 20 workers to produce the same 100 units. Country A has an absolute advantage in cloth. Conversely, if Country B can produce 100 units of wine with 5 workers while Country A needs 15 workers, Country B has an absolute advantage in wine. Both countries gain if A specialises in cloth and B in wine, then trade.

3. What is comparative advantage? How is it different from absolute advantage?

Comparative advantage is a country's ability to produce a good at a lower opportunity cost than another country, even if it is not the lowest-cost absolute producer. Proposed by David Ricardo. Key difference: | Aspect | Absolute Advantage (Smith) | Comparative Advantage (Ricardo) | |---|---|---| | Basis | Lower absolute cost (fewer inputs) | Lower opportunity cost | | Requirement | Country must be most efficient | Country only needs least relative disadvantage | | Trade possibility | Only if each has absolute advantage in one good | Trade beneficial even if one country is better at producing everything | | Practical relevance | Limited — rare scenario | More realistic — explains most world trade |

4. What is meant by Balance of Trade? Give its types.

The Balance of Trade (BOT) is the difference between the value of a country's exports and imports of visible goods (physical commodities) over a period. Types: - Favourable BOT: Exports of goods > Imports of goods (trade surplus). - Unfavourable BOT: Imports of goods > Exports of goods (trade deficit). - Balanced BOT: Exports of goods = Imports of goods. Note: BOT does not include services (invisible items), income, or capital flows. It is only a partial picture of a country's external position.

5. What is Balance of Payments? How does it differ from Balance of Trade?

The Balance of Payments (BOP) is a systematic record of all economic transactions between the residents of a country and the rest of the world during a given period (usually a year). Differences:

6. Mention the components of the Current Account in BOP.

The Current Account of BOP records the following components: 1. Visible trade (Balance of Trade): Exports and imports of physical goods (commodities). 2. Invisible trade: Services — travel, tourism, transport, insurance, banking, software, etc. 3. Investment income: Interest, dividends, and profits from investments abroad (and paid to foreign investors). 4. Current transfers: Remittances, gifts, grants, and pensions — one-sided transactions with nothing received in return. The Current Account Balance = (Exports of goods + services + income + transfers) − (Imports of goods + services + income + transfers).

7. What are the causes of disequilibrium in the Balance of Payments?

Disequilibrium in BOP means a persistent surplus or deficit. Major causes include: 1. Trade-related causes: Fall in export demand, rise in import demand, deterioration in terms of trade. 2. Economic factors: Inflation (making exports expensive), recession in trading partners (reducing demand for exports). 3. Political factors: War, political instability, sanctions disrupting trade. 4. Capital flows: Large outflows of capital (FDI abroad, repayment of external debt) causing deficit. 5. Structural factors: Lack of diversification in exports, over-dependence on a few commodities (e.g., oil). 6. Exchange rate changes: Appreciation of domestic currency making exports expensive and imports cheaper. 7. Natural calamities: Disrupting agricultural or industrial production and forcing imports.

8. What are the different types of exchange rate systems?

There are three main types of exchange rate systems: 1. Fixed Exchange Rate: The central bank pegs the domestic currency to another currency or basket at a predetermined rate. The central bank must maintain sufficient foreign reserves to defend the peg. Provides certainty but limits monetary policy independence. 2. Flexible (Floating) Exchange Rate: The exchange rate is determined entirely by market forces of demand and supply for foreign currency. The central bank does not intervene. Provides monetary policy autonomy but can lead to volatility. 3. Managed Floating: A hybrid system where the exchange rate is largely market-determined, but the central bank intervenes occasionally to prevent excessive volatility or disorderly market conditions. India currently follows this system.

VI. Answer in Detail

1. Explain the theory of comparative advantage with a numerical illustration.

David Ricardo's Theory of Comparative Advantage (1817) states that a country should specialise in the production of those goods in which it has a comparative advantage (lower opportunity cost), even if it has an absolute disadvantage in all goods. Both trading countries gain from such specialisation and trade. Assumptions: - Two countries, two commodities (2×2 model) - Labour is the only factor of production - Labour is mobile within a country but immobile internationally - Free trade, no transport costs - Constant returns to scale Numerical Illustration: | | Cloth (units per labour day) | Wine (units per labour day) | |---|---|---| | England | 100 | 50 | | Portugal | 120 | 80 | Portugal has an absolute advantage in both cloth (120 > 100) and wine (80 > 50). Yet trade is beneficial: Opportunity costs: - England: 1 unit of cloth costs 0.5 units of wine; 1 unit of wine costs 2 units of cloth. - Portugal: 1 unit of cloth costs 0.67 units of wine; 1 unit of wine costs 1.5 units of cloth. England has a comparative advantage in cloth (0.5 < 0.67) — its opportunity cost of producing cloth is lower. Portugal has a comparative advantage in wine (1.5 < 2) — its opportunity cost of producing wine is lower. Gains from trade: If England specialises in cloth and Portugal in wine, and they trade at a rate between their opportunity costs (e.g., 1 cloth = 0.6 wine), both countries consume more of both goods than under autarky. This demonstrates that trade is mutually beneficial even when one country is more efficient in everything.

2. Explain the components of the Balance of Payments in detail.

The Balance of Payments has two main components: the Current Account and the Capital Account. A. Current Account: Records the flow of goods, services, income, and current transfers. 1. Visible Trade (Balance of Trade): Exports and imports of physical goods — machinery, textiles, petroleum, chemicals, etc. This is the largest component for most developing countries. 2. Invisible Trade: Exports and imports of services — software, tourism, transport, insurance, banking, and business services. India has a surplus on invisible trade due to IT exports and remittances. 3. Investment Income: Earnings from investments abroad (interest, dividends, profits) paid to domestic residents, minus similar payments made to foreign investors from Indian investments. 4. Current Transfers: One-sided transactions — remittances from Indians working abroad (a major inflow for India), foreign grants, gifts, and pensions. B. Capital Account: Records the flow of financial assets and liabilities. 1. Foreign Direct Investment (FDI): Long-term investment in physical assets, factories, and businesses in India by foreign entities. 2. Portfolio Investment: Investment in financial assets like shares and bonds by foreign institutional investors (FIIs). 3. External Assistance: Loans and grants from foreign governments and international organisations (World Bank, IMF). 4. External Commercial Borrowings (ECBs): Loans taken by Indian companies from foreign commercial banks and markets. 5. Banking Capital: Movements in the accounts of banks operating internationally. 6. Rupee Debt Service: Repayment of principal and interest on rupee-denominated debt owed to foreign entities. Note: In accounting terms, the BOP always balances because any deficit in the current account is offset by a surplus in the capital account (or drawing down foreign exchange reserves). A "BOP deficit" in common usage means a current account deficit not fully covered by capital inflows.

3. Discuss the causes of disequilibrium in BOP and the corrective measures.

Disequilibrium in BOP means a persistent imbalance — either a deficit (payments > receipts) or surplus (receipts > payments). A deficit is more concerning for developing countries like India. Causes of Disequilibrium: | Category | Causes | |---|---| | Demand-side | Excess demand for imports, fall in export demand abroad | | Supply-side | Inadequate domestic production, poor infrastructure, lack of competitiveness | | Price factors | Domestic inflation making exports uncompetitive, changes in global commodity prices | | Exchange rate | Overvaluation of domestic currency (makes exports costly, imports cheap) | | Structural | Over-dependence on narrow export basket, low technology, poor diversification | | Capital flows | Large capital outflows, debt servicing burden, capital flight | | Political/External | War, sanctions, global recession, oil price shocks | Corrective Measures: A. Expenditure-reducing policies: - Monetary policy: Raise interest rates to reduce aggregate demand and import demand; attract foreign capital inflows. - Fiscal policy: Reduce government spending and increase taxes to cut domestic demand and thus import demand. B. Expenditure-switching policies: - Devaluation/depreciation: Lower the value of the domestic currency to make exports cheaper and imports dearer, switching demand from foreign to domestic goods. - Tariffs and quotas: Impose import duties or quantitative restrictions to reduce imports directly. - Export promotion: Subsidies, tax incentives, and infrastructure support for exporters. - Import substitution: Encourage domestic production of goods currently imported. C. Long-term structural measures: - Diversification of exports - Technology upgradation - Improving productivity and competitiveness - Encouraging foreign direct investment

4. Explain the different types of exchange rate systems with their merits and demerits.

1. Fixed Exchange Rate System: The government/central bank fixes the exchange rate at a specific level and maintains it through intervention in the forex market. | Merits | Demerits | |---|---| | Promotes certainty and stability in international trade | Requires large foreign exchange reserves to maintain the peg | | Encourages foreign investment (reduces exchange rate risk) | Loss of monetary policy independence — must align interest rates with the peg currency | | Prevents speculative fluctuations | Can lead to over/undervaluation of currency | | Disciplines monetary policy (prevents reckless money printing) | If the peg becomes unsustainable, speculative attacks can force a painful devaluation | 2. Flexible (Floating) Exchange Rate System: The exchange rate is determined entirely by market forces of demand and supply for foreign currency. | Merits | Demerits | |---|---| | No need for large forex reserves | Creates uncertainty for traders and investors | | Automatic adjustment of BOP — deficit leads to depreciation, which boosts exports | Can lead to excessive volatility and speculation | | Monetary policy independence — central bank can focus on domestic objectives | May encourage inflationary pressures if currency depreciates sharply | | Frees resources from defending a peg | Can be destabilising for small, open economies | 3. Managed Floating Exchange Rate System: The exchange rate is largely determined by market forces, but the central bank intervenes to smooth excessive fluctuations. | Merits | Demerits | |---|---| | Combines stability of fixed rate with flexibility of floating rate | Intervention can be misused for competitive devaluation | | Central bank can prevent disorderly market conditions | Market participants may expect intervention and take excessive risks | | Suitable for developing economies like India | Lacks clear rules — creates uncertainty about the extent of intervention | | Provides some monetary policy autonomy | Requires adequate forex reserves for intervention | India's exchange rate regime: India adopted a managed floating system since 1993. The RBI intervenes in the forex market to curb excessive volatility but does not target a specific exchange rate level.

5. Discuss the arguments for and against free trade and protection.

Arguments for Free Trade: 1. Efficiency: Specialisation according to comparative advantage leads to efficient resource allocation and higher global output. 2. Lower prices: Consumers benefit from cheaper imported goods and greater competition. 3. Greater choice: Access to a wider variety of goods and services. 4. Economies of scale: Access to larger world markets enables firms to achieve scale economies. 5. Technology transfer: Trade facilitates the flow of technology, ideas, and best practices. 6. Consumer welfare: Competition forces domestic producers to improve quality and reduce prices. 7. Peace and cooperation: Economic interdependence reduces conflict between nations. Arguments for Protection (against Free Trade): 1. Infant industry argument: New industries need temporary protection from established foreign competitors until they achieve economies of scale and become competitive. 2. Employment generation: Protection saves domestic jobs in industries that would be wiped out by foreign competition. 3. Diversification: Protection encourages the development of a diversified economy rather than dependence on a few sectors. 4. National security: Strategic industries (defence, energy, food) should not be dependent on foreign sources. 5. Balance of payments: Tariffs and quotas reduce imports and help correct BOP deficits. 6. Anti-dumping: Protection prevents foreign firms from selling goods below cost to destroy domestic competitors. 7. Improving terms of trade: A large country can use tariffs to lower import prices and improve its terms of trade. Instruments of Trade Policy: - Tariffs: Taxes on imports (raise the price of foreign goods). - Quotas: Quantitative limits on the quantity of imports. - Subsidies: Financial assistance to domestic producers/exporters. - Embargo: Complete ban on trade with a particular country or in a particular good. - Administrative barriers: Complex regulations, licensing requirements, quality standards that effectively restrict imports.

6. Explain the meaning, types, and factors affecting terms of trade.

Meaning: Terms of Trade (TOT) measure the rate at which a country's exports are exchanged for its imports. It is the ratio of export prices to import prices. Formula: TOT = (Index of Export Prices / Index of Import Prices) × 100 = (Px / Pm) × 100 Types of Terms of Trade: 1. Gross Terms of Trade (G): Ratio of the quantity of imports received to the quantity of exports given. G = (Qm / Qx), where Qm = quantity of imports, Qx = quantity of exports. 2. Net Barter Terms of Trade (N): Ratio of export price index to import price index. N = (Px / Pm) × 100. This is the most commonly used measure. 3. Income Terms of Trade (I): Adjusts net barter TOT for changes in export volume. I = (Px / Pm) × Qx = N × Qx. This is more relevant for developing countries because it measures the purchasing power of exports. Interpretation: - TOT > 100 → Favourable — export prices are high relative to import prices; the country can buy more imports with the same exports. - TOT = 100 → Balanced — no change from the base year. - TOT < 100 → Unfavourable — the country must export more to buy the same quantity of imports. Factors Affecting Terms of Trade: 1. Elasticity of demand: If world demand for a country's exports is elastic, TOT tends to be less favourable; if inelastic, TOT improves. 2. Elasticity of supply: If a country can increase export supply easily, prices fall and TOT may worsen. 3. Changes in exchange rates: Depreciation of the domestic currency can worsen TOT if import prices rise faster than export prices. 4. Tariffs and quotas: Import restrictions can improve TOT by reducing demand for imports and lowering their price. 5. Productivity changes: Improved productivity lowers export costs and may improve TOT if prices remain stable. 6. Composition of trade: Exports dominated by primary products (with low price elasticity) tend to have unfavourable TOT compared to manufactured goods exporters. 7. Global commodity prices: Oil price shocks, for example, can dramatically worsen TOT for oil-importing countries. 8. Economic growth: Rapid growth can increase demand for imports and worsen TOT.

Common Mistakes to Avoid

1. Confusing BOT with BOP: Balance of Trade covers only visible goods; BOP covers everything — goods, services, income, and capital. Always specify which one you are referring to.

2. Confusing absolute advantage with comparative advantage: Absolute advantage is about lower absolute cost (fewer inputs). Comparative advantage is about lower opportunity cost. A country can have no absolute advantage but still have a comparative advantage.

3. Saying BOP "does not balance": In accounting terms, BOP always balances (current account + capital account + errors and omissions = zero). When people say "BOP deficit," they mean a deficit in the current account that is not covered by capital inflows.

4. Mixing up quota and tariff: A tariff is a tax on imports (raises price). A quota is a physical limit on quantity (restricts supply). Both reduce imports but through different mechanisms.

5. Writing only the formula for TOT without interpretation: Always state whether the calculated TOT is favourable (> 100), unfavourable (< 100), or balanced (= 100) and explain what that means for the country's trade position.

6. Forgetting opportunity cost in comparative advantage: Always calculate opportunity cost when answering comparative advantage questions. Simply stating "this country is better at producing X" is not enough — you must show the opportunity cost comparison.

Exam Checklist

• [ ] Can I distinguish internal trade from international trade with at least 4 points of difference?
• [ ] Can I explain both absolute advantage (Smith) and comparative advantage (Ricardo) with a numerical example?
• [ ] Can I calculate opportunity cost and identify which country has a comparative advantage?
• [ ] Can I list at least 5 arguments for protection and 4 arguments for free trade?
• [ ] Can I define BOT and BOP and state at least 4 differences between them?
• [ ] Can I list all components of the Current Account and Capital Account of BOP?
• [ ] Can I explain 3 types of exchange rate systems with their merits and demerits?
• [ ] Can I define Terms of Trade, write the formula, and explain favourable vs unfavourable TOT?
• [ ] Can I list causes of BOP disequilibrium and at least 4 corrective measures?
• [ ] Do I know India's current exchange rate regime (managed floating since 1993)?