3. Chilton, Inc. sold 11,200 units last year for $20 each. Variable costs per unit were $4.00 for direct materials, $2.00 for direct labor, and $2.60 for variable overhead. Fixed costs were $61,400 in manufacturing overhead and $41,200 in nonmanufacturing costs a. What is the total contribution margin? (Round your intermediate calculations to 2 decimal places.) Total Contribution Margin 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 2,120 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