Tony Manufacturing produces a single product that sells for $110. Variable costs per unit equal $40. The company expects total fixed costs to be $82,000 for the next month at the projected sales level of 3000 units. In an attempt to improve performance, management is considering a number of alternative actions. Each situation is to be evaluated separately Suppose management believes that a $80,000 increase in the monthly advertising expense will result in a considerable increase in sales. Sales must increase by to justify this additional expenditure? 1143 units 1172 units 728 units 1168 units