Assume you are working at a department store and you are told by the manager to cut prices by 20% for all the new women's sweaters that are currently priced at $50. What will be the new price of these sweaters? Suppose the manager tells you to raise the prices back up by 20%. What is the new price of the sweaters? Why is your answer not the same as the original price of the sweaters? What importance does this have for why the midpoint formula is used in calculating price elasticity?