a) Matunda Ltd. employs a job order costing system in establishing the prices to charge for different welding orders. Normally, certain employees set up work before the main operation is completed by other employees. The cost of labour engaged in setting up is charged to overhead expenses. During the period ended 31 October 2020, 1,250 hours were spent on setting up at a cost of Sh 30,000. During this period the following costs were incurred on three jobs: Shs. Direct material 66,000 Direct labour 90,000 Overhead expenses (including set up costs) 144,000 300,000 Other information that relates to the jobs include: Job A Job B Job C Direct material costs Sh 36,320 4,200 25,480 Direct labour (hours) excluding set-up time 2,400 300 1,800 Setting-up (hours) 375 250 625 Costing for the jobs is carried out by the use of hourly rates for direct labour and for overheads. However, a new system is being proposed whereby there will be hourly rates for direct labour, for setting labour and for overheads excluding the cost of setting-up time. Required: The hourly rate under the existing system. (3 marks) in) The hourly rate under the proposed system (4 marks) ii) Cost statement for the three jobs using the existing systems approach to costing. (8 marks)