Straight-Line Depreciation Rates Convert each of the following estimates of useful life to a straight-line depreciation rate, stated as a percentage, assuming that the residual value of the fixed asset is to be ignored: (a) 4 years, (b) 8 years, (C) 10 years, (d) 16 years, (e) 25 years, (f) 40 years, (g) 50 years. If required, round your answers to two decimal places. Percentage Years 4 years 8 years a b. % % C. 10 years % d. 16 years % e. 25 years % f. 40 years % g. 50 years % Straight-Line Depreciation A refrigerator used by a wholesale warehouse has a cost of $82,000, an estimated residual value of $6,200, and an estimated useful life of 8 years. What is the amount of the annual depreciation computec by the straight-line method? $ Depreciation by Units-of-activity Method A diesel-powered tractor with a cost of $120,000 and an estimated residual value of $16,400 is expected to have a useful operating life of 28,000 hours. During April, the tractor was operated 150 hours. Determine the depreciation for the month. Carry out any division to two decimal places