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Question
Explain the term elasticity of demand.
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Solution
Alfred Marshall was the first economist to develop the concept of price elasticity of demand as the ratio of a relative change in quantity demanded to a relative change in price. A relative measure is needed so that changes in different measures can be compared. These relative changes in demand and price are measured by percentage change. The percentage changes are independent of units. The elasticity of demand is the ratio between the percentage change in demand and percentage change in price.
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RELATED QUESTIONS
A consumer spends Rs 1,000 on a good priced at Rs10 per unit. When its price falls by 20 percent, the consumer spends Rs800 on the good. Calculate the price elasticity of demand by the Percentage method
A consumer spends Rs 400 on a good priced at Rs 8 per unit. When its price rises by 25 percent, the consumer spends Rs 500 on the good. Calculate the price elasticity of demand by the Percentage method.
Price elasticity of demand of a good is (-) 1. Calculate the percentage change in price that will raise the demand from 20 units to 30 units.
A consumer spends Rs 400 on a good priced at Rs 4 per unit. When the price rises by 25 percent, the consumer continues to spend Rs 400. Calculate the price elasticity of demand by percentage method.
Explain price elasticity of demand.
Consider the demand for a good. At price Rs 4, the demand for the good is 25 units. Suppose the price of the good increases to Rs 5, and as a result, the demand for the good falls to 20 units. Calculate the price elasticity.
Fill in the blank with appropriate alternatives given below:
Income elasticity of demand for inferior goods is __________.
Assertion (A): Elasticity of demand explains that one variable is influenced by another variable.
Reasoning (R): The concept of elasticity of demand indicates the effect of price and changes in other factors on demand.
The concept of elasticity of demand was introduced by
- Luxuries goods have generally elastic demand.
- Goods whose close substitutes are available have inelastic demand.
