Last month, Fern Company sold 3,000 units of Product A for $25 each. Variable costs per unit include $1.5 for direct materials, $2.5 for direct labor, and $1 for variable overhead. Fixed costs include $15,000 in manufacturing overhead and $5,000 in nonmanufacturing costs. Compute the unit contribution margin. QUESTION 28 Refer to Fern Company. Compute the contribution margin ratio. QUESTION 29 Refer to Fern Company. Compute the total contribution margin. QUESTION 30 Refer to Fern Company. Compute the degree of operating leverage for last month. QUESTION 31