Explain the way of Price Elasticity of Demand

Question

Explain the way of Price Elasticity of Demand.

Answer 1

Price Elasticity of Demand can be measured as given below:

Price Elasticity = Proportionate change in quantity demanded/Proportionate change in price
                         OR

Ep = (Change in Quantity demanded / Quantity demanded)/ (Change in Price/price)

Ep = ((Q2-Q1)/Q1)/((P2-P1) /P1),

Here: Q1 stands for Quantity demanded before price change
Q2 stands for Quantity demanded after price change
P1 stands for Price charged before price change
P2 stands for Price charge after price change.