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: If rounding is required, round your percentage answer to one decimal place. a. 4 years fill in the blank 1 % b. 8 years fill in the blank 2 % c. 10 years fill in the blank 3 % d. 20 years fill in the blank 4 % e. 25 years fill in the blank 5 % f. 40 years fill in the blank 6 % g. 50 years fill in the blank 7 %