Hudson Co. reports the contribution margin income statement for 2015. HUDSON CO. Contribution Margin Income Statement For Year Ended December 31, 2015 Sales (9,600 units at $225 each) $ 2,160,000 Variable costs (9,600 units at $180 each) 1,728,000 Contribution margin $ 432,000 Fixed costs 324,000 Pretax income $ 108,000 If the company raises its selling price to $240 per unit. 1. Compute Hudson Co.'s contribution margin per unit. 2. Compute Hudson Co.'s contribution margin ratio. 3. Compute Hudson Co.'s break-even point in units. 4. Compute Hudson Co.'s break-even point in sales dollars.