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 20% (b) 30% 14% = Profit Margin X Investment Turnover 10 % x (e) 20% x 0.75 (c) X 1.5 20% x (d) 15% X () 2.2 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) %