3. In divisional income statements prepared for Demopolis Company, the Payroll Department costs are charged back to user divisions on the basis of the number of payroll distributions, and the Purchasing Department costs are charged back on the basis of the number of purchase requisitions. The Payroll Department had expenses of $64,560, and the Purchasing Department had expenses of $40,000 for the year. The following annual data for Residential, Commercial, and Government Contract divisions were obtained from corporate records: Residential Commercial Government Contract $2,900,000 $2,000,000 $3,250,000 Sales Number of employees: Weekly payroll (52 weeks a year) Monthly Payroll Number of purchase requisitions per year 410 75 7,400 210 35 160 15 3,000 2,000 a. Determine the total dollar amount of payroll checks and purchase requisitions processed per year by the company and each division. b. Using the activity base information in (a), determine the annual dollar amount of payroll and purchasing costs charged back to the Residential, Commercial, and Government Contract divisions from payroll and purchasing services. c. Why does the Residential Division have a larger service department charge than the other two divisions, even though its sales are lower