from the following data, calculate price elasticity of demand.

Form the following data, calculate price elasticity of demand.

From the following data calculate price elasticity of supply.

Explain price elasticity of demand.

On the basis of the following schedule , calculate price elasticity of demand by the percentage method : {:("Price per unit (Rs.)","Total expenditure(Rs.)"),(" "10," "180),(" " 9, " " 162):}