I need some managerial accounting help from the Financial and Managerial Accounting for MBAs, 5E textbook Easton, Halsey, McAnally, Hartgraves, Morse.

For chapter 19, I cant figure out mini exercise 18.

Customer Profitability Analysis Elite Services, Inc. provides residential painting services for three home building companies, Brookside, Edgewater, and Hillrose, and it uses a job costing system for determining the costs for completing each job. The job cost system does not capture any cost incurred by Elite for return touchups and refinishes after the homeowner occupies the home. Elite paints each house on a square footage contract price, which includes painting as well as all refinishes and touchups required after the homes are occupied. Each year, the company generates about one-third of its total revenues and gross profits from each of the three builders. The Elite owner has observed that the builders, however, require substantially different levels of support following the completion of jobs. The following data have been gathered Support Activity Major refinishes Touchups Communication Driver Hours on jobs Number of visits Number of calls Costs per Driver Unit 80 130 $ 25 Major Refinishes Builder Touchups Communication Brookside Edgewater Hillrose 130 70 79 250 210 215 610 365 350 Assuming that each of the three customers produces gross profits of $125,000, calculate the profitability from each builder after taking into account the support activity required for each builder Brookside$ Edgewater $ Hillrose