Mr. Ram spent ₹ 200 on a commodity and bought 20 units of it . When its price changed , he spent ₹ 300 and bought 15 units. Find out the elasticity of demand.

As price of a commodity increases from ₹ 4 per unit to ₹ 5 per unit, demand falls from 20 units to 10 units. Find out the elasticity of demand.

A consumer buys 20 units of a good at ₹ 10 per unit. When its price falls by 10%, its demand rises to 22 units. Find out the price elasticity of demand.

As a result of 10% rise in the price of a good, its demand falls from 100 unit to 90 units. Find out the price elasticity of deamand.

Market dmand for good at price ₹ 10 per unit is 100 units. When its price changes, its market demand falls to 50 units. Find out the new price, if the price elasticity of demand is (-)2.

A consumer buys 50 units of a good at ₹4 per unit. When its price falls by 25% ,its demand rises to 100 units. Find out price elasticity of demand.

At a price of Rs. 50 per unit the quantity demanded of a commodity is 1000 units . When its price falls by 10 percent , its quantity demanded rises to 1080 units . Calculate its price elasticity of demand . Is its demand inelastic ? Given reasons for your answer.

When price is ₹ per unit, demand for a commodity is 100 units. As the price falls to ₹ 8 per unit , demand expands to 150 units. Calculate elasticicty of demands.

Price of a commodity fall from ₹ 20 to ₹ 15 per unit. Its demand rises from 600 units to 750 units. Calculate its price elasticity of demand.