In the table below, identify the type of elasticity and state the reasons for the same:
Price Movement
Total Expenditure
Elasticity
a Falls
Rises
?
b Rises
Rises
?
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Solution
a) If a fall in own price of the commodity causes a rise in total expenditure, then elasticity of demand is greater than unitary. This is an example for normal goods.
b) If an increase in own price of the commodity causes a rise in total expenditure, then elasticity of demand is less than unitary. This is an example for Articles of distinction.