The quantity demanded of a commodity rises from 800 units to 850 units when its price falls from Rs. 20 per unit to Rs. 19 per unit . Calculate its 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.

At a price of ₹ 20 per unit, the quantity demanded of commodity is 300 units. If the price falls by 10% , its qunatity demanded rises by 60 units. Calculate its price elasticity.

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.

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.

At a price of 40 per unit, the quantity supplied of a commodity is 400 units. When its price falls by 10 per cent, its quantity supplied falls by 36 units. Calculate its elasticity of supply.

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.