Question Three: Aramco purchases chemical processing machinery for $550,000. The equipment has an estimated useful life of five years and an estimated salvage value of $50,000. The company expects to produce 20,000 units of output using this machinery, with 6,000 units in each of the first two years, 3,000 units in the next two years, and 2,000 units in the fifth year. Calculate the machinery yearly depreciation using (a) a straight-line method, (b) the double declining method, (c) the units of production method