PLEASE HELP ME UNDERSTAND!! WILL THUMBS UP! THANK YOU!

Dunedin Bank has two operating departments (Retail and Commercial) and three service departments: Operations, Information Technology (IT), and Transactions. For the last period, the following costs and service department usage ratios were recorded: The cost accountant at Dunedin Bank estimates that the cost structures in its departments are as follows: Required: a. If Dunedin Bank outsources both the Transactions Department and the IT Department, the total savings (before considering the fee paid to the outside vendor) will be: More than the sum of the savings from outsourcing the Transactions Department and IT Department. Equal to the sum of the savings from outsourcing the Transactions Department and IT Department. Less than the sum of the savings from outsourcing the Transactions Department and IT Department. Less than or equal to the savings from outsourcing the Transactions Department and IT Department. Impossible to determine from the information provided. b. In general (not limited to Dunedin Bank), if a firm is considering eliminating more than one service department, the savings will be: Less than or equal to the sum of the savings calculated from eliminating each of the individual service departments. Less than the sum of the savings calculated from eliminating each of the individual service departments. Equal to the sum of the savings calculated from eliminating each of the individual service departments. More than the sum of the savings calculated from eliminating each of the individual service departments. Impossible to determine from the information provided. Dunedin Bank has two operating departments (Retail and Commercial) and three service departments: Operations, Information Technology (IT), and Transactions. For the last period, the following costs and service department usage ratios were recorded: The cost accountant at Dunedin Bank estimates that the cost structures in its departments are as follows: Required: a. If Dunedin Bank outsources both the Transactions Department and the IT Department, the total savings (before considering the fee paid to the outside vendor) will be: More than the sum of the savings from outsourcing the Transactions Department and IT Department. Equal to the sum of the savings from outsourcing the Transactions Department and IT Department. Less than the sum of the savings from outsourcing the Transactions Department and IT Department. Less than or equal to the savings from outsourcing the Transactions Department and IT Department. Impossible to determine from the information provided. b. In general (not limited to Dunedin Bank), if a firm is considering eliminating more than one service department, the savings will be: Less than or equal to the sum of the savings calculated from eliminating each of the individual service departments. Less than the sum of the savings calculated from eliminating each of the individual service departments. Equal to the sum of the savings calculated from eliminating each of the individual service departments. More than the sum of the savings calculated from eliminating each of the individual service departments. Impossible to determine from the information provided