In recent years, Avery Transportation purchased three used buses. Because of frequent turnover in the accounting department, a different accountant selected the depreciation method for each bus, and various methods were selected. Information concerning the buses is summarized as follows. For the declining-balance method, the company uses the double-declining rate. For the units-of-activity method, total miles are expected to be 120, 000. Actual miles of use in the first 3 years were 2016, 26, 000; 2017, 31, 500; and 2018, 29, 500. For Bus # 3, calculate depreciation expense per mile under units-of-activity method. (Round answer to 2 decimal places, e.g. 0.50.) Compute the amount of accumulated depreciation on each bus at December 31, 2017. (Round answer to 0 decimal places, e.g. 2, 125.) If Bus 2 was purchased on April 1 instead of January 1, what is the depreciation expense for this bus in (1) 2015 and (2) 2016? (Round answer to 0 decimal places, e.g. 2, 125.)