Paints-R-Us Company gives painting services to commercial clients. By tracking overhead costs in an activity-based costing system, the company will assign the proper overhead costs to every completed job and client. The 2012 data from its activity-based costing system is as given:

Activity Cost Pool    Total Cost     Total Activity

Painting                      $264,000        34,800 hours

Job Support               $145,000         7,000 jobs

Client support           $4,800             220 clients

Other costs                $170,000         Not applicable

Total                           $583,800        

The "Other costs" pool consists of organization-sustaining costs.

One of Paints-R-Us' clients contracted for ten offices to be painted in 2012. This contract needed a total of 90 hours of painting. For this contract, the client was charged $2,000.

a. Evaluate the activity rates (i.e., cost per unit of activity) for the activity cost pools. Round off all evaluation to the nearest whole cent.

b. Using the activity-based costing system, determine the customer margin for Paints-R-Us. Round off all calculations to the nearest whole cent.

c. Consider Paints-R-Us decides instead to use a more traditional costing system in which ALL costs are allocated to customers on the basis of painting hours. Determine the customer margin for Paints-R-Us. Round off all computation to the nearest whole cent.

d. Which analysis, ABC in part b or traditional in part c, provides a more realistic picture of this client's true profitability?