Elasticity and Its Applications

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Elasticity and Its Applications 5 Elasticity and Its Applications

Figure 1 The Price Elasticity of Demand (1) (a) Perfectly inelastic demand: Elasticity equals 0 Price Demand 100 € 5 1. An increase in price . . . 4 Quantity 2. . . . leaves the quantity demanded unchanged. Copyright © 2011 Cengage Learning

Figure 1 The Price Elasticity of Demand (2) (b) Inelastic demand: Elasticity is less than 1 Price Demand € 5 90 1. A 22% increase in price . . . 4 100 Quantity 2. . . . leads to an 11% decrease in quantity demanded. Copyright © 2011 Cengage Learning

Figure 1 The Price Elasticity of Demand (3) (c) Unit elastic demand: Elasticity equals 1 Price Demand € 5 80 1. A 22% increase in price . . . 4 100 Quantity 2. . . . leads to a 22% decrease in quantity demanded. Copyright © 2011 Cengage Learning

Figure 1 The Price Elasticity of Demand (3) (d) Elastic demand: Elasticity is greater than 1 Price Demand € 5 50 1. A 22% increase in price . . . 4 100 Quantity 2. . . . leads to a 67% decrease in quantity demanded. Copyright © 2011 Cengage Learning

Figure 1 The Price Elasticity of Demand (4) (e) Perfectly elastic demand: Elasticity equals infinity Price 1. At any price above €4, quantity demanded is zero. € 4 Demand 2. At exactly €4, consumers will buy any quantity. 3. At a price below €4, quantity demanded is infinite. Quantity Copyright © 2011 Cengage Learning

Figure 2 Total Expenditure Price Demand €4 100 P P × Q = €400 (expenditure) Quantity Q Copyright © 2011 Cengage Learning

Figure 3 How Total Expenditure Changes When Price Changes: Inelastic Demand An increase in price from €1 to €3 … … leads to an Increase in total revenue from €100 to €240 Demand Demand €3 80 Expenditure = €240 €1 100 Expenditure = €100 Quantity Quantity Copyright © 2011 Cengage Learning

Figure 4 How Total Expenditure Changes When Price Changes: Elastic Demand An increase in price from €4 to €5 … … leads to an decrease in total revenue from €200 to €100 €5 20 Demand Demand Expenditure = €100 €4 50 Expenditure = €200 Quantity Quantity Copyright © 2011 Cengage Learning

Figure 5 Elasticity of a Linear Demand Curve Copyright © 2011 Cengage Learning

Figure 6 The Price Elasticity of Supply (1) (a) Perfectly inelastic supply: Elasticity equals 0 Price Supply €5 1. An increase in price . . . 4 100 Quantity 2. . . . leaves the quantity supplied unchanged. Copyright © 2011 Cengage Learning

Figure 6 The Price Elasticity of Supply (2) (b) Inelastic supply: Elasticity is less than 1 Price Supply 110 €5 1. A 22% increase in price . . . 100 4 Quantity 2. . . . leads to a 10% increase in quantity supplied. Copyright © 2011 Cengage Learning

Figure 6 The Price Elasticity of Supply (3) (c) Unit elastic supply: Elasticity equals 1 Price Supply 125 €5 1. A 22% increase in price . . . 100 4 Quantity 2. . . . leads to a 22% increase in quantity supplied. Copyright © 2011 Cengage Learning

Figure 6 The Price Elasticity of Supply (4) (d) Elastic supply: Elasticity is greater than 1 Price Supply €5 200 1. A 22% increase in price . . . 4 100 Quantity 2. . . . leads to a 67% increase in quantity supplied. Copyright © 2011 Cengage Learning

Figure 6 The Price Elasticity of Supply (5) (e) Perfectly elastic supply: Elasticity equals infinity Price 1. At any price above €4, quantity supplied is infinite. €4 Supply 2. At exactly €4, producers will supply any quantity. 3. At a price below €4, quantity supplied is zero. Quantity Copyright © 2011 Cengage Learning

Figure 7 How the Price Elasticity of Supply Can Vary Copyright © 2011 Cengage Learning

Figure 8 An Increase in Supply in the Market for Chips Price of chips 1. When demand is inelastic, an increase in supply . . . 2. . . . leads to a large fall in price . . . S1 S2 Demand €3 100 2 110 Quantity of 3. . . . and a proportionately smaller increase in quantity sold. As a result, revenue falls from €300 to €220. chips Copyright © 2011 Cengage Learning

Table 1 Prices of 7-night Ski Holidays in Austria, from London Copyright © 2011 Cengage Learning

Figure 9 The Supply of Ski Holidays in Europe Copyright © 2011 Cengage Learning

Figure 10 Policies to Reduce the Use of Illegal Drugs Copyright © 2011 Cengage Learning