When price of a commodity falls by 80 % , the quantity demanded of it increases by 100 %. Find out its price elasticity of demand.

When the price of a commodity falls by ₹ 2 per unit , its quantity demanded increases by 10 units . Its price elasticity of demand is (-) 1. Calculate its demanded at the price before change was ₹ 10 per unit.

When price of a commodity falls by 20%, the quantity supplied decreases by 25%. Find out its price elasticity of supply.

When price of a commodity X falls by 10%, its demand rises from 150 units to 180 units. Calculate its price elasticity of demand. How much should be the percenyage fall in its price so that its demand rises from 150 to 210 units.

As the price of a commodity falls from ₹ 8 and ₹ 6, its demand rises from 100 units to 125 unts. Find out the price ealsticity of demand by percentage method.

When price of a good falls by 10 percent , its quantity demanded rises from 40 units to 50 units. Calculate price elasticity of demand by the percentage method.