Cullumber Willis is the advertising manager for Bargain Shoe Store. She is currently working on a major promotional campaign. Her ideas include the installation of a new lighting system and increased display space that will add $57,600 in fixed costs to the $396,000 currently spent. In addition, Cullumber is proposing that a 5% price decrease ($60 to $57) will produce a 20% increase in sales volume (20,000 to 24,000). Variable costs will remain at $36 per pair of shoes. Management is impressed with Cullumber's ideas but concerned about the effects that these changes will have on the break-even point and the margin of safety. (a) Compute the current break-even point in units, and compare it to the break-even point in units if Cullumber's ideas are used. Current break-even point New break-even point pairs of shoes pairs of shoes