Please look up on Google "Seeking Alpha 4415804" and click the first link (This is where to find the Form 10K). It doesn't let me attach the financial statement or post links.

The longer an asset's useful life, the lower the annual depreciation expense reported on the income statement and the higher the income each year. It is of interest, therefore, to know whether a company's useful life estimates are more conservative or more aggressive than its competitors. If you assume straight-line depreciation (which is consistent with the company's policy), and zero salvage value, you can estimate the average life for depreciable assets as follows: Average useful life - Depreciable asset cost* Depreciation expense *Depreciable assets exclude land and construction-in-progress, since these assets are not depreciated Dollar General reports that the useful lives of its depreciable assets range from three years for some furniture, fixtures and equipment to up to 40 years for buildings. Estimate the useful life, on average, for Dollar General's depreciable assets at 2/1/2019. Since Dollar General does not report depreciation expense as a separate line-item on its income statement (as most companies do not), use the depreciation expense found in Note 1 to the Financial Statements. Be careful not to divide thousands with millions; either put all numbers in terms of thousands or millions. b. 9 years a. 13 years c. 10 years d. 11 years The longer an asset's useful life, the lower the annual depreciation expense reported on the income statement and the higher the income each year. It is of interest, therefore, to know whether a company's useful life estimates are more conservative or more aggressive than its competitors. If you assume straight-line depreciation (which is consistent with the company's policy), and zero salvage value, you can estimate the average life for depreciable assets as follows: Average useful life - Depreciable asset cost* Depreciation expense *Depreciable assets exclude land and construction-in-progress, since these assets are not depreciated Dollar General reports that the useful lives of its depreciable assets range from three years for some furniture, fixtures and equipment to up to 40 years for buildings. Estimate the useful life, on average, for Dollar General's depreciable assets at 2/1/2019. Since Dollar General does not report depreciation expense as a separate line-item on its income statement (as most companies do not), use the depreciation expense found in Note 1 to the Financial Statements. Be careful not to divide thousands with millions; either put all numbers in terms of thousands or millions. b. 9 years a. 13 years c. 10 years d. 11 years