Heyden Company has fixed costs of $479,600. The unit selling price, variable cost per unit, and contribution margin per unit below. Product Selling Price Variable Cost per Unit Contribution Margin per Unit Q $520 $340 $180 300 The sales mix for products Q and Z is 30% and 70%, respectively. Determine the break-even point in units of Q and Z. If requires whole number. Z 220 80 a. Producto inite