ELASTICITY OF DEMAND

Elasticity Along A Linear Demand Curve

The price elasticity of demand of commodity X is 1/2 of price elasticity of demand of commodity. When price of X falls by 40% , its demand rises by 20 units. Calculate price elasticity of demand of commodity X and Y, it originally 100 units of X were demanded at price of ₹ 5 per unit.

Define unitary elastic demand and draw a demand curve for it. What is the significance of a unitary elastic demand curve ?

If the elasticity of the demand eta =1 then demand is