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 $$127\mathrm{.}3$ million and $$112\mathrm{.}3$ 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 $6\mathrm{.}8$ for $6\mathrm{.}77555).$

years

c$.$ Compute the estimated percent used up of lululemon's depreciable assets.

Note: Round percentage to one decimal place $($for example, enter $6\mathrm{.}7\%$ for $6\mathrm{.}6555\%).$

$\%$