5 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: 10 points Units manufactured and sold Selling price of the product Direct materials used (pounds) Current Year 30,000 Prior Year 24,000 $ 46 $ 46 14,600 13,600 Cost per pound of materials Direct labor hours $ 10 $ 8 5,850 6,600 Hourly wage rate $ 25 $ 20 Power (kwh) Cost of power per kwh 2,000 $ 3 $ 1,000 3 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.