In the fourth quarter of last year, Colditz Company embarked on a major effort to improve productivity. It redesigned products, reengineered manufacturing processes, and offered productivity improvement courses. The effort was completed in the last quarter of the current year. The controller's office has gathered the following year-end data to assess the results of this effort: Units manufactured and sold Selling price of the product Direct materials used (pounds ) Cost per pound of materials Direct labor hours Hourly wage rate Power (kwh ) Cost of power per kwh Current Year 32,000 $ 55 15,500 $ 10 6,750 $ 25 4,000 $ 4 Prior Year 24,000 $ 55 14,500 $ 8 7,500 $ 20 750 $ 4 Required 1. Prepare a summary contribution income statement for each of the 2 years, and calculate the change in operating income. 2. Compute the partial operational productivity ratios for each production factor in each year. 3. Compute the partial financial productivity ratios for each production factor in each year. Required 1 Required 2 Required 3 Prepare a summary contribution income statement for each of the 2 years, and calculate the change in operating income. Colditz Company Comparative Income Statement For the Years Ended Current Year Prior Year Variable cost of sales: Total variable costs of sales $ 0 $ 0 $ 0 Change in operating income Required 1 Required 2 Required 3 Compute the partial operational productivity ratios for each production factor in each year. (Round your answers to 4 decimal places.) Current Year Prior Year Direct materials Direct labor Power Required 1 Required 2 Required 3 Compute the partial financial productivity ratios for each production factor in each year. (Round your answers to 4 decimal places.) Current Year Prior Year Direct materials Direct labor Power