Explain the various degrees of price elasticity of demand.
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https://www.meritnation.com/cbse/class12-commerce/studymaterial/economics/introductory-microeconomics/theory-of-consumer-behaviour/338_1981_5807#slide6_elasticity-of-demand-or-price-elasticity-of-demand
https://www.meritnation.com/cbse/class12-commerce/studymaterial/economics/introductory-microeconomics/theory-of-consumer-behaviour/338_1981_5807#slide6_elasticity-of-demand-or-price-elasticity-of-demand