Determining Missing Items in Return Computation One item is omitted from each of the following computations of the return on investment: Rate of Return on Investment = Profit Margin x Investment Turnover 10 % X 18 % = (b) = 16% X (a) 0.75 24 % (c) X 1.5 16 % = 20 % X (d) (e) = 15 % X 1.4 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) %