B. Summer patios has two divisions, East and West. The company's service departments include Purchasing, Advertising, and Research and Development (R&D). Allocation of expenses are based on the number of purchase requisitions, number of advertising promotions, and the number of hours Purchasing Department in $1 . The curred expenses of $25,000; Advertising incurred 5,000; and Research and Development (R&D) incurred $15,000. Using the information shown below, allocate the service department expenses among the divisions Division Purchasing East West Total 1,300 3,200 Advertising Purchase Requisitions Division Promotions East West 30 100 Total R&D Division Hours 3,300 East West Total 4,500