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CALCULATOR Do It! Review 10-4 (Part Level Submission) The service division of Raney Industries reported the following results for 2020. Sales $477,000 Variable costs 286,200 Controllable fixed costs 65,400 Average operating assets 627,00 Management is considering the following independent courses of action in 2021 in order to maximize the return on investment for this division 1. Reduce average operating assets by $104,500, with no change in controllable margin. 2. Increase sales $97,185, with no change in the contribution margin percentage. (a) Compute the controllable margin and the return on investment for 2020. Controllable margin 5 Return on investment for 2020 Click If you would like to show Work for this question: Work