When the price of commodity increased by 40% and its quantity demanded falls from 150 to 120 units then the price elasticity of demand for a commodity is?

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.

Solution

Given :
Q1 = 150
Q2 = 120
Price rises by 40%

`"Elasticity of demand" = "Percentage change in Quantity Demanded"/"Percentage change in Price"`

`"Percentage change in Quantity demand" = ("Q"_2-"Q"_1)/"Q"_1 xx 100`

= `(150-120)/(150) xx 100 = 20%`

`"Elasticity of demand" = "Percentage change in Quantity Demanded"/"Percentage change in Price"`

= `(20)/(40) = 0.5`

Concept: Elasticity of Demand

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How do you calculate price elasticity of demand for a commodity?

The way to calculate price elasticity is to divide the change in demand (or supply) by the change in price. This will tell you which bucket your product falls into. A value of one means that your product is unit elastic and changes in your price reflect an equal change in supply or demand.

When the price of commodity increases by 40% and its quantity demanded falls from 150 to 120 units then the price elasticity of demand for a commodity is?

Answer. Ed = 1/2 . elasticity of demand is less than unity.

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