SAVENDA electronics has employed maintenance engineers to keep the equipment running in peak condition at its production company located in M-Phase in Lusaka. Over the past eight months, SAVENDA incurred the following maintenance cost for these engineers. Plant activity is best measured by direct labour hours. Required: a) Using the high-low method and based on direct labour hours, determine the fixed and variable components of the maintenance costs. b) Describe the relationship between the output and costs in the form of a linear equation c) Discuss four advantages and disadvantages of High-Low Method d) Compare and contrast cost classification techniques in the name of high low method and least square method SAVENDA electronics has employed maintenance engineers to keep the equipment running in peak condition at its production company located in M-Phase in Lusaka. Over the past eight months, SAVENDA incurred the following maintenance cost for these engineers. Plant activity is best measured by direct labour hours. Required: a) Using the high-low method and based on direct labour hours, determine the fixed and variable components of the maintenance costs. b) Describe the relationship between the output and costs in the form of a linear equation c) Discuss four advantages and disadvantages of High-Low Method d) Compare and contrast cost classification techniques in the name of high low method and least square method