Estimating Useful Life and Percent Used Up The property and equipment section of the lululemon athletica 2018 balance sheet follows. Depreciation expense related to property and equipment was $118.7 million and $104.8 million, for the years ended February 3, 2019, and January 28,2018 , respectively. Required a. Consider the level of the various PPE components. Does it seem likely that the company manufactures its own inventory? b. Compute the estimated useful life of lululemon's depreciable assets. Note: Round your answer to one decimal place (for example, enter 6.8 for 6.77555 ). x years c. Compute the estimated percent used up of lululemon's depreciable assets. Note: Round percentage to one decimal place (for example, enter 6.7% for 6.6555% ). %