ILLUSTRATIVE QUESTIONS COST BEHAVIOUR 81 C-VP ANALYSIS QUESTION ONE Golden Company's total overhead costs at various levels of activity are presented below: Month Machine Hours Total Overhead Cost March 50,000 Sh.194,000 April 40,000 Sh.170,200 May 60,000 Sh.217,800 June 70,000 Sh.241,600 Assume that the overhead costs above consist of utilities, supervisory salaries, and maintenance. The breakdown of these costs at 40,000 machine hour level of activity is as follows: 5h- Utilities ..................... 52,000 ....... variable Supervisory salaries. . . . . 60,000. . . . . ...fixed Maintenance ................ 58,200 ......... mixed Total Overhead costs ...... 170,200 The company wants to break down maintenance costs into its basic variable and fixed elements. Required: a) As shown above overhead in June amounted to Sh.241, 600. Estimate how much of this consisted of maintenance cost. (10 marks) b) Using High low method, estimate a cost formula for maintenance (6 marks) c) Express the company's total overhead costs in the linear equation form Y = a + bX. (6 marks) d) What overhead cost would you expect to be incurred at an operating activity level of 45,000 machinehours