(a) Coca cola purchased a new machine on June 1, 2011, at a cost of $180,000. The machine's estimated useful life at the time of the purchase was five years, and its residual value was $10,000. Prepare a complete depreciation schedule with half year convention under first two methods and switch on straight line in the last method. a. 200 percent method b. 300 percent method c. Straight line (b) Critically evaluate the disposal of plant and equipment if cash is less than book value.