Given the demand function P = 20 – 5Q, find the price elasticity of demand when price of the commodity is 5 Birr per unit. Mention if the demand is price elastic or inelastic at this point

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Given the demand function P = 20 – 5Q, find the price elasticity of demand when price of the
commodity is 5 Birr per unit. Mention if the demand is price elastic or inelastic at this point

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