【題目】 The price elasticity of demand for cigarettes is 0.4. If government wants to reduce smoking by 10 percent, by how much should it raise the price of cigarettes by imposing a tax? by 50 percent by 25 percent by 10 percent by 20 percent
【題目】 If cigarettes and marijuana had been found to be substitutes, a tax placed on cigarettes would increase the quantity demanded of marijuana. increase the demand for marijuana. decrease the quantity demanded of marijuana. decrease the demand for marijuana.