Exercise 18.28 Data for three business units is shown below. Determine the unknowns. (Round dollar answers to 0 decimal places, e.g. 5,275 and all other answers to 2 decimal places, e.g. 15.25.) Unit 1 Unit 2 Unit 3 Income $11,748 $14,742 Investment $55,500 $ Sales $166,500 $ Return on investment 32.00% 22 % 27 % Return on sales % % % Investment turnover times 2.90 times 5.30 times