Zippy Quadcopters plans to sell a standard quadcopter (toy drone) for $54 and a deluxe quadcopter for $84. Zippy purchases the standard quadcopter for $34 and the deluxe quadcopter for $64. Management expects to sell two deluxe quadcopters for every three standard quadcopters. The company's monthly fixed expenses are $15,000. How many of each type of quadcopter must Zippy sell monthly to breakeven? To earn $12,000? First identify the formula to compute the sales in units at various levels of operating income using the contribution margin approach. (Abbreviations used: Avg. = average, and CM = contribution margin.) Operating income Weighed-avg. CM per unit = Breakeven sales in units ( Fixed expenses Next compute the weighted-average contribution margin per unit. First identify the formula labels, then complete the calculations step by step. Standard Deluxe Total Sale price per unit $ 54 $ 84 Deduct: Variable expense per unit (34) (64) Contribution margin per unit $ 20 $ 20 20 Sales mix in units 3 2 5 $ 100 Contribution margin $ 60 $ 40 20 Weighted average contribution margin per unit How many of each type of quadcopter must Zippy sell monthly to breakeven? Zippy must sell standard quadcopters and deluxe quadcopters to breakeven.