Calculate price elasticity of demand:

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.

When price of a good is Rs. 7 per unit a consumer busy 12 units . When price fails to Rs. 6 per unit he spends Rs. 72 on the good . Calculate price elasticity of demand by using percentage method. Comment on the likely shape of demand curve based on based on this measure of elasticity.

when price of a good is ₹ 7 per unit, a consumer buys 12 units. When price falls to ₹ 6 per unit, he spends ₹ 72 on the good. Calculate price elasticity of demand by using the percentage method. Comment on the likely shape of demand curve based on this measure of elasticity.

Calculate the price elasticity of demand for a commodity when its price increase by 25% and quantity demanded falls from 150 units to units.

There is a vaccine which can prevent a serious disease . Market experts feel that its use can be increased 5 times if its price falls to half . Calculated price elasticity of demand for the vaccine.

When the price of X doubles , its quantity demanded falls by 60 percent . Calculate its price elasticity of demand . What should be the percentage change in price so that its quantity demanded doubles.

A consumer buys 20 units of a good at a price of ₹5 per units. He incurs an expenditurs of ₹ 120 , when he buys 24 units. Calculate price elasticity of demand using the percentage method. Comment upon the likely shape of demand curve based on this information.