Chilton, Inc. sold 12.400 units last year for $20 each. Variable costs per unit were $2.00 for direct materials, $3.10 for direct labor, and $3.00 for variable overhead. Fixed costs were $60,100 in manufacturing overhead and $40,700 in nonmanufacturing costs. a. What is the total contribution margin? (Round your intermediate calculations to 2 decimal places.) Total Contribution Margin 12 b. What is the unit contribution margin? (Round your answer to 2 decimal places.) Unit Contribution Margin c. What is the contribution margin ratio? (Round your intermediate calculations and final answer to 2 decimal places.) Contribution Margin Ratio % d. If sales increase by 2,180 units, by how much will profits increase? (Round your intermediate calculation to 2 decimal places and final answer to the nearest dollar amount.) Profits Increase