b. Using the cost driver information in (a), determine the annual amount of payroll and purchasing costs allocated to the Residential, Commercial, and Government Contract divisions from payroll and purchasing services. Do not round interim calculations. Round your answers to two decimal places. Support department allocation rates: Payroll Department per distribution Purchasing Department per requisition Residential Commercial Government Contract Total Support department allocations: Payroll Department $ $ $ Purchasing Department Total $ $ than the other two divisions because Residential is a user of support department services. Residential has many employees on a weekly payroll, which c. Residential's support department allocations are translates into a number of payroll transactions