help with last part pls

monthly fixed cost is 22000

Next tcompute the weighted-average contribution margin per unit. First identify the formula labels, then complete the calculations step by step. How many of each type of quadcopter must Rally sell monthly to breakeven? Rally must sell standard quadcopters and deluxe quadcopters to breakeven. How many of each type of quadcopter must Rally sell monthly to earn $13,200 ? To reach the target operating income, Rally must sell standard quadcopters and deluxe quadcopters