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Econ 206(A) Tutorial 1 - Examples Colin Green. Opportunity Cost - Example What does it cost to go to University? 1.Direct Costs: –Tuition Fees + Living.

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Presentation on theme: "Econ 206(A) Tutorial 1 - Examples Colin Green. Opportunity Cost - Example What does it cost to go to University? 1.Direct Costs: –Tuition Fees + Living."— Presentation transcript:

1 Econ 206(A) Tutorial 1 - Examples Colin Green

2 Opportunity Cost - Example What does it cost to go to University? 1.Direct Costs: –Tuition Fees + Living Expenses etc Opportunity Cost? –Lost Earnings (for instance £15K a year for 3 years)

3 Absolute and Comparative Advantage – Example 2 Countries: Portugal and England 2 Products: Wine and Cloth Portugal can produce 100 wine or 50 cloth (or a mixture) England can produce 20 wine or 40 cloth (or a mixture)

4 Mixture (pre trade) ClothWine Portugal2550 England2010 Total40100

5 Absolute Advantage 2 Questions: 1.Which Country has absolute advantage in cloth production? 2.Which Country has absolute advantage in wine production? Portugal: It can produce more of both

6 Opportunity Cost What is the opportunity cost of cloth production in both countries? –Portugal = 2 units of Wine –England = ½ unit of Wine What is the opportunity cost of wine production in both countries? –Portugal = 1/2 unit of Cloth –England = 2 units of Cloth

7 ClothWineOpportunity Cost of producing 1 cloth Portugal50 or1002 wine England40 or20½ Wine

8 Comparative Advantage 1.Which country has comparative advantage in cloth production? –England as its opportunity cost of cloth production is lower. 2. Which country has comparative advantage in wine production? –Portugal as its opportunity cost of wine production is lower. Optimal for each country to specialise and then trade with each other.

9 Specialisation ClothWine Portugal0100 England400 Total40100

10 Trade It pays to specialise because of trade. Assume some simple prices: For example: England requires at least 1/2 unit of wine for 1 unit of cloth. Portugal needs at least 1/2 unit of cloth for 1 unit of wine. If we take some middle price (1 units of cloth per unit of wine). Then both countries can be better off through specialisation and trade.

11 Post Trade ClothWine Portugal2080 England20 Total40100 Assume Portugal trades 20 wine for 20 cloth. Both can consume a combination of cloth and wine that was not possible pre-trade

12 Pre Trade Comparison (If Portugal & England produced the same amount of wine as their post trade amount) ClothWine Portugal1080 England020 Total10100

13 Comparative Advantage (2) Specialisation in Labour An individual is the best lawyer and the best secretary in town. (i.e. has absolute advantage in being a Lawyer and a Secretary) What should they do?


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