Learning Contents: ·          Concept of Demand and Elasticity of Demand ·          Various Concepts of Elasticity of Demand ·          Concept of Elastic and   Inelastic Demand   Concept of Demand and Elasticity of Demand The Law of demand explains that, keeping other factors constant, demand for a commodity is inversely related to its price. In other words, if the price for a commodity rises, the quantity demand decreases. On the other hand, if price falls, quantity demand increases. Therefore, the concept of demand focuses on the direction of change i.e. how demand changes due to a change in price. In simple words, it explains that demand either increases or decreases as a result of a change in price but it overlooks an important aspect i.e. degree of change in demand i.e. How much or to what extent demand changes due to change in price? The degree of change is explained by the elasticity of demand. Therefore,