guys i need some help on 6-8 and 7-17. please,

UNTI PROBLEM 6-8 Service Department Charges L02) Tasman Products, Ltd., of Australia has a Maintenance Department that services the equipment in the company's Forming Department and Assembly Department. The cost of this servicing is charged to the operating departments on the basis of machine-hours. Cost and other data relating to the Maintenance Department and to the other two departments for the most recent year are pre- sented below. (The currency in Australia is the Australian dollar.)