price of a commodity fall from ₹15 to ₹10 as a result demand rises from 100 unit to 150 units use the expenditure to find the price elasticity of demand
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Answer:
Given, P=Rs.15;P
1
=Rs.12;△P=P
1
−P=Rs.12−Rs.15=(−)Rs.3
Percentage change in price =
P
△P
×100=
15
−3
×100=(−)20%
Percentage change in quantity demanded =25%
Price elasticity of demand (E
d
)=(−)
Percentage change in price
Percentage change in quantity demanded
=(−)
(−)20%
25%
=1.25
Price elasticity of demand =1.25.
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