E Question Help E4-29A (similar to) Zippy Scooters plans to sell a motorized standard scooter for $70 and a motorized chrome scooter for $85 Zippy Scooters purchases the standard scooter for $60 and the chrome scooter for $65. Zippy Scooters expects to sell two chrome scooters for every three standard scooters. Zippy Scooters' monthly faced expenses are $12,600. How many of each type of scooter must Zippy Scooters sell monthly to break even? To earn $8.400? First, identify the formula to compute the sales in units at various levels of operating income using the contribution margin approach Break-even sales in units Contribution margin ratio Fixed expenses Operating income Units sold Variable expenses Weighed-avg CM per unit