One item is omitted from each of the following computations of the return on investment: Rate of Return Investment on Investment Profit Margin Turnover 14% (a) (b) 0.75 (c) 10% 28% 33% 1.5 16% 20% (d) 15% 1.8 (e) 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) %