a) On 1 October 2017, Dela bought an equipment for S$289,000 and its useful life was 4 years. The residual value is SS12,500 and total operating hours is 15,000 hours. The financial year ends on 31 December. The operating hours in year 2017 was 3400 hours, in 2018 was 4,500 hours, in 2019 was 6,200 hours and the balance in last year. Depreciable cost: Year Straight line Double decline Units of hour 2017 2018 2019 2020 2021 b) The company sold the machine on 31 December 2019 for $185,000. Assume it uses double decline balance method. Determine the gain or loss from disposal.