1 / 20

Elasticity and its Application

5. Elasticity and its Application. What is elasticity? What is the price elasticity of demand? What is the price elasticity of supply? What are the income and cross-price elasticities of demand? . A scenario…. 0.

elvina
Download Presentation

Elasticity and its Application

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. 5 Elasticity and its Application • What is elasticity? • What is the price elasticity of demand? • What is the price elasticity of supply? • What are the income and cross-price elasticities of demand?

  2. A scenario… 0 You design websites for local businesses. You charge $200 per website, and currently sell 12 websites per month. Your costs are rising (including the opp. cost of your time), so you’re thinking of raising the price to $250. The law of demand says that you won’t sell as many websites if you raise your price. How many fewer websites? How much will your revenue fall, or might it increase?

  3. Percentage change in Qd Price elasticity of demand = Percentage change in P Price Elasticity of Demand 0 • Price elasticity of demand measures how much Qd responds to a change in P

  4. end value – start value x 100% midpoint Calculating Percentage Changes 0 • So, we instead use the midpoint method: • The midpoint is the number halfway between the start & end values, also the average of those values

  5. ACTIVE LEARNING 1: Calculate an elasticity Use the following information to calculate the price elasticity of demand for hotel rooms: if P = $70, Qd = 5,000 if P = $90, Qd = 3,000 4

  6. EXAMPLE 1:“Rice Krispies” vs. “Sunscreen” 0 • The prices of both of these goods rise by 20%. For which good doesQd drop the most? Why?

  7. EXAMPLE 2:“Blue Jeans” vs. “Clothing” 0 • The prices of both goods rise by 20%. For which good doesQd drop the most? Why?

  8. EXAMPLE 3:“Insulin” vs. “Caribbean Cruises” 0 • The prices of both of these goods rise by 20%. For which good doesQd drop the most? Why?

  9. EXAMPLE 4:“Gasoline in the Short Run” vs. “Gasoline in the Long Run” 0

  10. ACTIVE LEARNING 2: Elasticity and expenditure/revenue A. Pharmacies raise the price of insulin by 10%. Does total expenditure on insulin rise or fall? B. As a result of a fare war, the price of a luxury cruise falls 20%. Does luxury cruise companies’ total revenue rise or fall? 9

  11. Percentage change in Qs Price elasticity of supply = Percentage change in P Price Elasticity of Supply 0 • Price elasticity of supply measures how much Qs responds to a change in P. • Loosely speaking, it measures the price-sensitivity of sellers’ supply. • Again, use the midpoint method to compute the percentage changes.

  12. The Determinants of Supply Elasticity • The more easily sellers can change the quantity they produce, the greater the price elasticity of supply. • Example: Supply of beachfront property is harder to vary and thus less elastic than supply of new cars. • For many goods, price elasticity of supply is greater in the long run than in the short run, because firms can build new factories, or new firms may be able to enter the market.

  13. ACTIVE LEARNING 3: Elasticity and changes in equilibrium • The supply of beachfront property is inelastic. The supply of new cars is elastic. • Suppose population growth causes demand for both goods to double (at each price, Qd doubles). • For which product will P change the most? • For which product will Q change the most? 12

  14. Percent change in Qd Income elasticity of demand = Percent change in income Other Elasticities • The income elasticity of demand measures the response of Qd to a change in consumer income.

  15. Cross-price elasticity of demand = % change in Qd for good 1 % change in price of good 2 Other Elasticities • The cross-price elasticity of demand measures the response of demand for one good to changes in the price of another good.

  16. P S2 S1 $11.00 PB = $10.00 Tax $9.50 PS = D1 Q 500 430 A Tax on Sellers A tax on sellers shifts the S curve up by the amount of the tax. Effects of a $1.50 per unit tax on sellers The price buyers pay rises, the price sellers receive falls, eq’m Q falls.

  17. P S1 $11.00 PB = $10.00 Tax $9.50 PS = D1 D2 Q 500 430 The Incidence of a Tax: how the burden of a tax is shared among market participants Because of the tax, buyers pay $1.00 more, sellers get $0.50 less.

  18. The market for hotel rooms P S D 0 Q ACTIVE LEARNING 4: Effects of a tax Suppose gov’t imposes a tax on buyers of $30 per room. Find new Q, PB, PS, and incidence of tax. 17

  19. CASE STUDY: Who Pays the Luxury Tax? • 1990: Congress adopted a luxury tax on yachts, private airplanes, furs, expensive cars, etc. • Goal of the tax: To raise revenue from those who could most easily afford to pay – wealthy consumers. • But who really pays this tax?

  20. P S PB Buyers’ share of tax burden Tax Sellers’ share of tax burden PS D Q CASE STUDY: Who Pays the Luxury Tax? The market for yachts Demand is price-elastic. In the short run, supply is inelastic. Hence, companies that build yachts pay most of the tax.

More Related