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Question
When the price of a commodity falls by 80%, the quantity demanded increases by 100%. Find out its price elasticity of demand.
Ed = `100/80 = 1.25`
Solution
Price Elasticity of Demand (Ed) = `("Percentage Change in Quantity Demanded")/("Percentage Change in Price")`
Ed = `(100%)/(-80%)`
Ed = 1.25
This means the price elasticity of demand is 1.25, which indicates that the demand is relatively elastic. However, it is important to remember the negative sign when interpreting the relationship, as it reflects the inverse relationship between price and quantity demanded.
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