Final answer:
The price elasticity of demand is a measure of how responsive the quantity demanded is to a change in price. It is calculated using a formula that compares the percentage change in quantity demanded to the percentage change in price.
Step-by-step explanation:
The price elasticity of demand is a measure of how responsive the quantity demanded is to a change in price. It is calculated using the formula:
Elasticity = ((Q2 - Q1)/(Q1 + Q2)/2) / ((P2 - P1)/(P1 + P2)/2)
Using the given information, we can calculate the percentage change in quantity demanded and the percentage change in price to find the price elasticity of demand.