Exercise 23-19 The Bramble Transportation Company uses a responsibility reporting system to measure the performance of its three investment centers: Planes, Taxis, and Limos. Segment performance is measured using a system of responsibility reports and return on investment calculations. The allocation of resources within the company and the segment managers' bonuses are based in part on the results shown in these reports. Recently, the company was the victim of a computer virus that deleted portions of the company's accounting records. This was discovered when the current period's responsibility reports were being prepared. The printout of the actual operating results appeared as follows. Determine the missing pieces of information below. Planes Taxis Limos Service revenue $502,600 Variable costs 5,500,700 304,300 Contribution margin 245,000 477,932 Controllable fixed costs 1,501,500 Controllable margin 77,000 234,432 Average operating assets 25,015,300 1,465,200 Return on investment 10 % 8 %