【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.
【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