Answer and Explanation:
The formula to compute the price elasticity of demand is as follows:
= Percentage change in quantity demanded ÷ percentage change in price
At Price P0, the Quantity demanded is Q0
And,
At Price P1, the Quantity Demanded is Q1
Just like this, it could be computed
[tex]\frac{Q_1 - Q_0}{(Q_1 + Q_0)/2}[/tex] divided by [tex]\frac{P_1 - P_0}{(P_1 + P_0)/2}[/tex]