Direct labor or machine hours may not be the appropriate cost driver for overhead in all areas of manufacturing due to the complexities of many manufacturing processes. Many companies use activity-based costing (ABC) which uses multiple drivers (items that consume resources) rather than just one driver to apply overhead to their activities. With ABC, a company can use a cost driver that has a direct cause/effect relationship in its applied overhead costs. Waterways looked into ABC as a method of costing because of the variety of items it produces and the many different activities in which it is involved. The activities listed below area sample of possible cost pools for Waterways. Assembling Payroll Billing Plant supervision Digging trenches Product design Janitorial Purchasing materials Machine maintenance Selling Machine setups Testing Molding Welding Packaging Using the following information, determine the overhead rates and the actual cost assigned for each of the activity cost pools in a possible ABC system for Waterways. (Round answers to 2 decimal places, e.g. 12.25.) WATERWAYS CORPORATION Estimated Use of Cost Activity Cost Pools Estimated Drivers per Use of Cost Cost Drivers Overhead Activity Drivers Irrigation installation Labor cost $1,712,200 12.230 12,215 Machining (all machine use) Machine hours 1,579,450 31,589,000 31,590,000 Customer orders Number of orders 34,450 2,650 2,612 Shipping none (direct) N/A N/A traced directly Design Cost per design 679 7 6 Selling Number of sales calls 313,500 20,900 21.120 Activity Cost Pools Irrigation installation Machining (all machine use) Customer orders Design Selling eTextbook and Media WATERWAYS CORPORATION Activity- Based Overhead OH Cost Rates Assigned