(Part A) The costs of operating the maintenance department of a computer manufacturer, Bread and Butter company, for the last four months have been as follows. Month Cost Production volume Units 110,000 7,000 115,000 8,000 111.000 7.700 97.000 6.000 Required Calculate the costs that should be expected in month five when Output is expected to be 7,500 units. Ignore inflation.Part (B): The following data relate to the overhead expenditure of contract cleaners (for industrial cleaning) at two activity levels. Square metres cleaned 12,750 15,100 Overheads $73,950 $83,585 When more than 14,000 square metres are industrially cleaned, there will be a step up in fixed costs of $4,700. Required Calculate the estimated total cost if 14,500 square metres are to be industrially cleaned. Part (C): Brady Co is a painting and decorating company. The following information is available for two periods. Period 1 Period 2 Square metres decorated 10,000 14,000 Total cost $44,000 $56,000 When more than 12,000 square metres are decorated, the fixed costs increase by $6,000. The total cost for period 3 if 15,500 square metres are decorated is $