$($Major U$.$S$.$ Retailers$)$ The following table shows financial data $($year $2004)$ for Costco

Wholesale and Walmart, two major U$.$S$.$ retailers.

McDonald$$s Wendy$$s

Inventory $ $129\mathrm{.}4$ $ $54\mathrm{.}4$

Revenue $17,140\mathrm{.}53,148\mathrm{.}9$

Cost of goods sold $11,943\mathrm{.}71,634\mathrm{.}6$

Gross profit $5,196\mathrm{.}81,514\mathrm{.}4$

Assume that both companies have an average annual holding cost rate of $30$ percent $($i$.$e$.,$

it costs both retailers $$3$ to hold an item that they procured for $$10$ for one entire year$).$

a$.$ How many days, on average, does a product stay in Costco$$s inventory before it is sold?

Assume that stores are operated $365$ days a year.