Question
Distinguish (with graphical illustration) between price elasticity of Demand and cross elasticity of demand. How can you measure the elasticity of demand? Explain with example how the concept of elasticity of demand is useful for an industry in its decision making process?
Answer :
Word Count : 792
| Aspect | Price Elasticity of Demand | Cross Elasticity of Demand |
|---|---|---|
| Definition | The degree of responsiveness of quantity demanded of a good to a change in its own price. | The degree of responsiveness of quantity demanded of a good to a change in the price of another related good. |
| Formula | Percentage change in quantity demanded / Percentage change in own price | Percentage change in quantity demanded of good X / Percentage change in price of good Y |
| Interpretation | Measures the sensitivity of demand for a good to changes in its own price. | Measures the degree of substitutability or complementarity between two goods. |
| Value Range | Negative (for normal goods) | Positive for substitutes, negative for complements. |
| Perfectly Inelastic | Quantity demanded remains constant regardless of price changes (Ed = 0). | Not applicable. |
| Perfectly Elastic | Quantity demanded changes infinitely with any price change (Ed = -∞). | _______ ___ ___ _________ _____ _________.