Question 1 Prairie Airlines purchased a 747 aircraft on January 1, 2016, at a cost of $30,000,000. The estimated useful life of the aircraft is 20 years, with an estimated residual value of $4,000,000. On January 1, 2018 the airline revises the total estimated useful life to 15 years with a revised residual value of $3,000,000. (20 Marks) Instructions: 1. Calculate the depreciation and carrying amount at December 31, 2018 using (a) the straight-line method. Depreciable Depreciation Annual Year Cost Rate Accumulated Carrying Depreciation Depreciation