Identify the Price Elasticity of Demand by using figures under the following situations & also

name the commodity type:

a) When the price of commodity is increasing frequently but there are no changes in is

quantity demand.

b) When a small % increase in price causes a bigger reduction in quantity demand.

c) Calculate the Elasticity of Demand, when;

P1= $ 6, Q1= 13 units

P2= $ 6.75, Q2= 11 units