(b) The following particulars relate to a processing machine treating a typical material. You are required to calculate the machine hour rate. The cost of the machine Estimated life Scrap value Working time (50 weeks of 44 hrs. each) Machine maintenance per annum 1,00,000 10 years *10,000 2,200 hrs. 200 hrs Setting up time estimated @ 5% of total productive time Electricity is 16 units per hour @ 10 paise per unit. Chemicals required weekly Maintenance cost per year 20 1,200 Two attendants control the operations of the machine together with 6 other machines, their combined weekly wages are 140. Departmental overhead allocated to this machine per annum * 2,000. [8]