One item is omitted from each of the following computations of the return on investment: Return on Investment 14 % (b) 12% 14 % (e) = Profit Margin x Investment Turnover 10% (a) 16 % X 0.75 (c) X 1.50 20% X (d) 0.15 X 1.60 Determine the missing items, identifying each by the appropriate letter. Round investment turnover amounts to two decimal places. (a) (b) % () % (d) (e) %