Determining missing items in return on investment computation One item is omitted from each of the following computations of the return on investment: Return on Investment Profit Margin Investment Turnover 25 % 10 % X (a) (b) = 28 % X 0.75 27 % = (c) X 1.5 10 % = 20 % X (e) 15 % X (d) 2 Determine the missing items identified by the letters as shown above. If required, round your answers to two decimal places. (a) (b) (c) % % (d) (e) %