Advertisements
Advertisements
प्रश्न
Consider the demand curve D(p) = 10 − 3p. What is the elasticity at price `5/3` ?
Advertisements
उत्तर
D(p) = 10 − 3p
`(Delta D(p))/(Delta p) = -3 `⇒ Change in demand per unit change in price
`e_d = (DeltaQ)/(Deltap) xx p/Q`
`Þ - 3 xx p/(10-3p) Þ (-3p)/(10-3p)`
At price p `= 5/3`,
`e_d = (-3 xx 5/3)/(10-3 (5/3))`
`e_d Þ (-5)/5 = -1`
i.e., the elasticity of demand at price p =`5/3` is unitary elastic.
APPEARS IN
संबंधित प्रश्न
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.
When the price of a commodity X falls by 10 percent. Its demand rises from 150 units to 180
units. Calculate is price elasticity of demand. How much should be the percentage fall in its
price so that its demand rises from 150 to 210 units?
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 100 on a good priced at Rs 4 per unit. When its price falls by 25 percent, the consumer spends Rs 75 on the good. Calculate the price elasticity of demand by the Percentage method.
A consumer spends Rs 200 on a good priced at Rs 5 per unit. When the price falls by 20 percent, he continues to spend Rs 200. Find the price elasticity of demand by percentage method.
State whether the following statement is True or False :
Concept of elasticity of demand is useful for finance minister.
What is the elasticity of demand?
What do you mean by complements? Give examples of two goods which are complements of each other.
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.
Give reason or explain the following statement.
All desires are not demand.
Fill in the blank with appropriate alternatives given below:
Cross elasticity of demand is applicable to ____________ goods.
State whether the following statement is TRUE and FALSE.
Perfectly inelastic demand curve is parallel to the X axis.
State whether the following statement is TRUE and FALSE.
Total outlay is price multiplied by quantity.
Define price elasticity of 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.
State whether the following statement is true or false. Give valid reasons in support of your answer.
Luxury goods often have lower price elasticity of demand.
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?
Identify the correctly matched pair from the items in Column A by matching them to the items in column B:
| Column A | Column B |
| 1. Increase or decrease in demand for a commodity does not cause any change in its price. | (a) Effect on supply, in the case of Perfectly Elastic Demand. |
| 2. Increase or decrease in demand causes a change in the price of the commodity. Equilibrium quantity remains constant. | (b) Effect on demand, in the case of Perfectly Inelastic Supply. |
| 3. Increase or decrease in demand cause a change in the price of the commodity. Equilibrium quantity remains constant. | (c) Effect on demand, in the case of Perfectly Elastic Supply. |
| 4. Increase or decrease in demand for a commodity does not cause any change in its price. | (d) Effect on supply, in the case of Perfectly Elastic Demand. |
Explain the concept of price elasticity of demand.
When is the demand for a good said to be elastic?
