Coronado has determined the contribution margin ratio of a product to be 40%. Its selling price is $40, while its costs consist of two variable costs and one fixed cost. The sole fixed cost is a selling and administrative cost. The variable selling and administrative cost is $2.80 /unit. What is the variable manufacturing cost per unit? (Round onswer to 2 decimal ploces, e. . 15.25.) Variable manufacturing cost per unit What is the gross margin of one unit of this product if there are no fixed manufacturing costs? (Round answer to 2 decimal ploces es. 15.25.) Gross margin per unit What is the gross margin percentage for this product? Gross margin