The Street Division of Labrosse Logistics just started operations. It purchased depreciable assets costing $40.0 million and having a four-year expected life, after which the assets can be salvaged for $8.0 million. In addition, the division has $40.0 million in assets that are not depreciable. After four years, the division will have $40.0 million available from these non depreciable assets. This means that the division has invested $80 million in assets with a salvage value of $48.0 million. Annual operating cash flows are $12.8 million, In computing ROI, this division uses end-of-year asset values in the denominator. Depreciation is computed on a straight-line basis. recognizing the salvage values noted. Ignore taxes. Required: a. \& b. Compute ROI, using net book value and gross book value for each year. Note: Enter your answers as a percentage rounded to 2 decimal places (i.e., 32.10)