ECON 102 Lecture Notes - Lecture 19: Inferior Good, Normal Good, Marginal Cost

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7 Nov 2016

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● Example

○ Q = 100 - 4P

○ Find ε when P = 5

■

■ ε =

● Example

○ Q = 60 - 2P

○ What price should the firm charge if it wants to maximize Total Revenue?

○ Find where ε = -1

○ ε = = -1

○ ε =

○ -2P = -60 + 2P

○ 60 = 4P

○ P = 15

○

● Determinants of price elasticity of demand:

○ Availability of substitutes:

■ cetaris paribus, the more substitutes are available, the more elastic the

demand of the good

○ The portion of a consumer's budget spent on the good:

■ the smaller the portion of the budget, the more inelastic the demand will

60 Q

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Related Questions

1. Determinants of the price elasticity of demand

Consider some determinants of the price elasticity of demand:

The availability of close substitutes
Whether the good is a necessity or a luxury
How broadly you define the market
The time horizon being considered

A good without any close substitutes is likely to have relatively inelastic or elastic demand since consumers cannot easily switch to a substitute good if the price of the good rises?

2. A good's price elasticity of demand depends in part on how necessary it is relative to other goods. If the following goods are priced approximately the same, which one has the least elastic demand?

a. Diamond necklace

b. Amputation procedures for diabetes sufferers

3. The price elasticity of demand for good also depends on how you define the good.

Organize the goods found in the following table by indicating which is likely to have the most elastic demand, which is likely to have the least elastic demand, and which will have demand that falls in between.

Categories:	Most Elastic	In Between	Least Elastic
Food
Red bell peppers
Vegetables

4. The price elasticity of demand is also affected by the given time horizon.

If the price of gasoline is relatively high for a long time, consumers are more likely to buy more fuel-efficient cars or switch to alternatives like public transportation. Therefore, the gasoline demand is _______ elastic in the short run than in the long run.

a. less

b. more

c. no more, no less

bluepanda480

Consider some determinants of the price elasticity of demand:

The availability of close substitutes
Whether the good is a necessity or a luxury
How broadly you define the market?
The time horizon being considered

A good without any close substitutes is likely to have relatively ___________(inelastic/elastic) demand since consumers cannot easily switch to a substitute good if the price of the good rises.

A good's price elasticity of demand depends in part on how necessary it is relative to other goods. If the following goods are priced approximately the same, which one has the least elastic demand?

A. Diamond necklace

B. A heart value for heart attack victims

The price elasticity of demand for good also depends on how you define the good.

Categories	Most Elastic	In Between	Least Elastic
Food
Red Bell Peppers
Vegetables

The price elasticity of demand is also affected by the given time horizon.

If the price of gasoline is relatively high for a long time, consumers are more likely to buy more fuel-efficient cars or switch to alternatives like public transportation. Therefore, the demand for gasoline is__________ (less, more, no more, nor less) elastic in the short run than in the long run.