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Questions
How is elasticity of supply measured according to the percentage method?
How is the price elasticity of supply measured?
How can Elasticity of supply be measured?
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Solution
According to the percentage method, elasticity of supply (Es) is the ratio between the percentage change in quantity supplied and the 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)"/"Q"xx100`
Percentage change in price = `"(ΔP)"/"P"xx100`
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
Notes
Students should refer to the answer according to the question.
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