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Problem #1. The numbers in column D are rates that apply to each line item. - i.e. D13 represents the annual depreciation rate. The depreciation during the observation period can be calculated using this rate. Likewise, D22 represents the WAVG (overall) interest rate on the LT debt of the company. In the Income Statement, CGS is of a typical retail business, not manufacture. Depreciation in G20 must correspond to the depreciation in the balance sheet. Numbers in column I are ratios of the corresponding line items which are fractions marked to the sales revenue. Accordingly, I29 represents tax rate.