Answer:
Price elasticity of demand measures the sensitivity of a firm's revenues to changes in its product's price.
Step-by-step explanation:
Price elasticity of demand measures the percentage of rise in the demand when a priced is lowered.
You can talk of elastic demand when the quantity changes more than the price.
Unit elastic when the quantity demanded change the same proportion of the change in the price.
And inleastic demand when the change in the quantity demanded is minor to change in the price.