As the manager of a ski resort, you want to increase the quantity of lift tickets sold by 10%. Your staff economist has determined that the price elasticity of demand for lift tickets is 2. To increase sales by the desired amount, you should:
ecrease the price of a lift ticket by 5%.
decrease the price of a lift ticket by 2.5%.
increase the price of a lift ticket by 5%.
increase the price of a lift ticket by 2.5%.