15 12 points Chilton, Inc. sold 12,600 units last year for $20 each. Variable costs per unit were $3.00 for direct materials, $3.40 for direct labor, and $2.70 for variable overhead. Fixed costs were $61,500 in manufacturing overhead and $40,400 in nonmanufacturing costs. a. What is the total contribution margin? (Round your intermediate calculations to 2 decimal places.) _;1 b. What is the unit contribution margin? (Round your answer to 2 decimal places.) c. What is the contribution margin ratio? (Round your intermediate calculations and nal answer to 2 decimal places.) % cl. If sales increase by 2,050 units, by how much will profits increase? (Round your intermediate calculation to 2 decimal places and final answer to the nearest dollar amount.)