When price of a good falls from ₹ 10 per unit to ₹ 7 per unit, quantity demanded of the good rises from 100 to 160 units. Calculate its elasticity of demand.

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.

When the price of a good rises from ₹20 per unit to ₹30 per unit, the revenue of the firm producing this good rises from ₹100 to ₹300, Calculate the price 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.

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

If price of a good rises from ₹ 46 to ₹ 50 per unit, the demand decreases from 30 units to 15 units. Calculate co-efficient of price elasticity of demand.

A 5 per cent fall in the price of a good raises its demand from 300 units to 318 units. Calculate its price elasticity of demand.