Chilton, Inc. sold 11,100 units last year for $20 each. Variable costs per unit were $3.00 for direct materials, $2.30 for direct labor and $2.80 for variable overhead. Fleed costs were $61700 in manufacturing overhead and $41,400 In nonmanufacturing costs. a. What is the total contribution margin? (Round your intermediate calculations to 2 decimal places.) b. What is the unit contribution margin? (Round your answer to 2 decimal places.) What is the contribution margin ratio (Round your Intermediate calculations and final answer to 2 decimal places.) c. What is the contribution margin ratlo? (Round your intermediate calculations and final answer to 2 decimal places.) % d. If sales increase by 2.060 units, by how much will profits increase? (Round your intermediate esleulation to 2 decimal place and final answer to the nearest dollar amount.)