eBook 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 % 0.75 2096 1.5 15% (c)X 20 % 10% 1.4 15 % Determine the missing items identified by the letters as shown above. If required, round your answers to two decimal places. ) (b)