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प्रश्न
What are the methods of measuring Elasticity of demand?
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उत्तर
There are three methods of measuring the elasticity of demand.
The percentage method:
Ep = `(ΔQ)/(ΔP)xx P/Q`
It is also known as the ratio method when we measure the ratio as
Ep = `(%ΔQ)/(%ΔP)`
% ∆Q = percentage change in demand, %∆P = Percentage change in price.
Total outlay method:
Marshall suggested that the simplest way to decide whether demand is elastic or inelastic is to examine the change in the total outlay of the consumer or total revenue of the firm.
Total revenue = Price × Quantity sold
TR = P × Q
Total outlay method:
| Price | Quantity Demanded | Total Outlay | Elasticity |
| 150 | 3 | 450 | e > 1 |
| 125 | 4 | 500 | e = 1 |
| 100 | 5 | 500 | e < 1 |
| 75 | 6 | 450 |
Demand is elastic if there is an inverse relationship between price and total outlay, and direct relation means inelastic. Elasticity is unity when the total outlay is constant.
संबंधित प्रश्न
Income elasticity of demand for inferior goods is negative.
Income elasticity of demand for inferior goods is negative.
Demand for the commodity having multiple uses has elastic demand.
Price elasticity of demand of goods X is -2 and goods Y is -3. Which of the two goods is more price elastic and why?
What will be the effect of 10 percent rise in price of a good on its demand if price elasticity of demand is (a) Zero, (b)-1, (c)-2.
The measure of price elasticity of demand of a normal good carries minus sign while price elasticity of supply carries plus sign. Explain why?
A consumer spends Rs 60 on a good priced at Rs 5 per unit. When price rises by 20 percent, the consumer continues to spend Rs 60 on the good. Calculate the price elasticity of demand by percentage method.
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
Price elasticity of demand of a good is (-)1. When its price per unit falls by one rupee, its de from 16 to 18 units. Calculate the price before a change
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.
Explain any 'two methods' of measuring price elasticity of demand.
State whether the following statements are TRUE or FALSE :
The demand of foodgrains is inelastic.
What do you mean by substitutes? Give examples of two goods which are complements of each other.
What do you mean by complements? Give examples of two goods which are complements of each other.
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.
Consider the demand curve D(p) = 10 − 3p. What is the elasticity at price `5/3` ?
Fill in the blank with appropriate alternatives given below:
Income elasticity of demand for inferior goods is __________.
State whether the following statement is TRUE and FALSE.
Concept of Elasticity of Demand is useful for finance minister.
Define the following concept:
Cross Elasticity of Demand
Define or explain the following concept:
Unitary Elastic Demand
Answer the following question.
If the price of a commodity rises by 40% and its quantity demanded falls from150 units to 120 units, calculate the coefficient of price elasticity of demand for the commodity.
Answer the following question.
When the price of X doubles, its quantity demanded falls by 60 percent. Calculate its price elasticity of demand. What should be the percentage change in price so that its quantity demanded doubles?
Give economic term:
Elasticity resulting from infinite change in quantity demanded.
What are the degrees of price elasticity of Demand?
Elasticity of the demand is available when:
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.
Study the following table and answer the questions:
| Price of Pen (₹) | Demand for Pen |
| 10 | 500 |
| `square` | 400 |
| 30 | `square` |
| `square` | 200 |
| 50 | `square` |
Questions:
- Complete the above table.
- Which type of relationship is found between the price of a pen and demand for the pen?
Assertion (A) : A change in quantity demanded of one commodity due to a change in the price of other commodity is cross elasticity.
Reasoning (R) : Changes in consumers income leads to a change in the quantity demanded.
The price of a good decreases from ₹100 to 80 per unit. If the price elasticity of demand for the good is 2 and the original quantity demanded is 30 units, calculate the new quantity demanded.
Price elasticity of demand is defined as the percentage change in the quantity demanded of a commodity divided by the percentage change in the price of that commodity.
Define elasticity of demand.
When is the demand for a good said to be elastic?
What is unit elasticity of demand?
Which statement about the law of demand and elasticity of demand is true?
