Exercise 4 : At the beginning of year I a manufacturing company acquired a new moulding machine for 80,000. It is estimated to have a useful life of six years during which time its output will be: Year 1 2 3 4 5 6 200,000 units 150,000 units 175,000 units 200.000 units 180,000 units 190,000 units The machine is expected to have a scrap value of 10,000. Calculate the annual depreciation for each of the six years using the units of service method