III. Northeast Airlines purchased an aircraft on Mar. 1, 2015, at a cost of $45,000,000. Theestimated useful life of the aircraft is 20 years, with an estimated residual value of $5,000,000. On Sep. 1,2018 the airline revises the remaining estimated useful life to 10 years with a revised residual value of$3,000,000.INSTRUCTIONS: All amounts must be rounded to total dollars. For Northeast Airlines,
【題組】1. Assuming the double-declining-balance is used, compute the carrying amount at Dec. 31, 2017.