2 (20 marks) Part I The following data relate to the overhead expenditure of Sparkly Cleaners (for industrial cleaning) at various activity levels. Month January February March April May June July August Square metres cleaned Cleaning cost ($) 12,000 33,000 7,000 26,000 9,000 29,000 6,000 22,000 10,000 30,000 13,000 36,000 15,000 40,000 11,000 31,000 Required: Using the high-low method, calculate the estimated total cost if 14,200 square metres are to be industrially cleaned. Your answer should show the variable cost and fixed cost calculations including the cost formula. Part II (Chapter 9, 10 marks) Basalt Ltd. produces two types of stereo units: Deluxe and Regular. For the year ended 30 June 2022 the company reported the following data: Budgeted overhead Expected activity (in direct labour hours) Actual activity (in direct labour hours) Actual overhead Units produced Prime costs Direct labour hours $540,000 150,000 153,000 $600,000 Deluxe Regular 15,000 90,000 $120,000 $900,000 15,000 138,000 Required: a) Calculate a predetermined overhead rate based on direct labour hours. b) Calculate the applied overhead and determine the underapplied or overapplied overhead for the year. c) Calculate the unit cost for each type of stereo using the predetermined overhead rate. (Chapter 3, 10 marks)