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How is elasticity of supply measured according to percentage method? - Economic Applications

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Question

How is elasticity of supply measured according to percentage method?

Long Answer

Solution

Percentage Method:

According to percentage method, elasticity of supply (Es) is the ratio between percentage change in quantity supplied and percentage change in price of the commodity. In fact, this method originated from the definition of price elasticity of supply itself.

Price elasticity of supply = `("Percentage change in quantity supplied")/("Percentage change in its Price")`

Percentage Change in quantity supplied = `(ΔQ)/Qxx100`

Percentage change in price = `(ΔP)/Pxx100`

Now the percentage formula can be written as

Es= `((ΔQ)/Qxx100)/((ΔP)/Pxx100)`

Cancelling out 100 by 100, we get

Es = `((ΔQ)/Q)/((ΔP)/P)`

When Q = initial quantity

P Initial price

ΔQ = Change in quantity supplied

ΔP = Change in price of the commodity

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Elasticity of Supply
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Chapter 3: Theory of Supply - QUESTIONS [Page 73]

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Goyal Brothers Prakashan Economic Application [English] Class 10 ICSE
Chapter 3 Theory of Supply
QUESTIONS | Q 11. | Page 73

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