2. Answer both A and B questions. A. Distinguish between the straight-line method of depreciation from written down value method of depreciation. B. A machinery is bought for RO 20,000 with an estimated useful life of 4 years. The expected scrap value at the end of its useful life is RO 4,000. Find out a) The book value of machinery after 3 years using written down value method of depreciation. b) The book value of machinery after 3 years using the straight-line method of depreciation