The price elasticity of demand of commodity of X is ½ of price elasticity of demand of commodity Y.When the price of X falls by 40% ,its demand rises by 20 units.Calculate price lasticity of demand of commodity X and Y if,orginally 100 units of X were demanded at price of rs 5 per unit.
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a microscopic membrane of lipids and proteins which forms the external boundary of the cytoplasm of a cell or encloses a vacuole, and regulates the passage of molecules in and out of the cytoplasm.
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