In: Accounting
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 The Ste. Marie Division of Pacific Media Corporation just started operations. It purchased depreciable assets costing $39 million and having a four-year expected life, after which the assets can be salvaged for $7.8 million. In addition, the division has $39 million in assets that are not depreciable. After four years, the division will have $39 million available from these nondepreciable assets. This means that the division has invested $78 million in assets with a salvage value of $46.8 million. Annual depreciation is $7.8 million. Annual operating cash flows are $20 million. Depreciation is computed on a straight-line basis, recognizing the salvage values noted. Ignore taxes. Assume that the division uses beginning-of-year asset values in the denominator for computing ROI. Required: a. & b. Compute ROI, using net book value and gross book value  | 
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Solution:
| Computation of annual Operating Income | |
| Particulars | Amount (In million) | 
| Annual operating cash flows | $20.00 | 
| Less: Depreciation | $7.80 | 
| Annual operating income | $12.20 | 
| Computation of Gross book value and net book value of assets at the end of each year | |||||
| Particulars | Year 0 | Year 1 | Year 2 | Year 3 | Year 4 | 
| Gross Book value of Assets | $78.00 | $78.00 | $78.00 | $78.00 | $78.00 | 
| Less: Accumulated depreciation | $0.00 | $7.80 | $15.60 | $23.40 | $31.20 | 
| Net Book Value | $78.00 | $70.20 | $62.40 | $54.60 | $46.80 | 
| Computation of ROI | ||||
| Particulars | Year 1 | Year 2 | Year 3 | Year 4 | 
| Using Gross Book Value | ||||
| Net operarting income | $12.20 | $12.20 | $12.20 | $12.20 | 
| Gross book value of asset at beginning | $78.00 | $78.00 | $78.00 | $78.00 | 
| ROI (Net operating income / Gross assets book value) | 15.64% | 15.64% | 15.64% | 15.64% | 
| Using Net Book Value | ||||
| Net operarting income | $12.20 | $12.20 | $12.20 | $12.20 | 
| Net book value of asset at beginning | $78.00 | $70.20 | $62.40 | $54.60 | 
| ROI (Net operating income / Net assets book value) | 15.64% | 17.38% | 19.55% | 22.34% |