Suppose that the price elasticity of demand for cigarettes is .46 in the short run and 1.89 in the long run, the income elasticity of demand for cigarettes is .5 and the cross price elasticity of demand between cigarettes and alcohol is -0.70. Suppose also that the price of cigarettes, the income of consumers, and the price of alcohol all increased by 10%. Calculate how much the cigarettes will change a) in the short term run b) in the long – term run.

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