做Straight-line depreciation時發現有以下賬目不知道怎樣計算:-
(1) Depreciation exp.
(2) Accumulated depreciation
(3) Book value at year-end
(a) Cost $300,000
(b) Depreciation 30%
(c) Useful life 5 years
(d) Purchase date: 27/7/09
請幫忙解答以上問題, 謝謝!