$1-$a$.$ Calculate the inventory turnover ratio for $2018$ and $2017.$

$1-$b$.$ Calculate the average days to sell inventory for $2018$ and $2017.$

$2.$ Did inventory turnover at Chander Northwest improve or decline in $2018?$

$3.$ Calculate the $2018$ gross profit percentage.

$4.$ The main competitor for Chander Northwest is Arctic Cat. Prior to being acquired by Textron, Incorporated, Arctic Cat reported its inventory turnover was $3\mathrm{.}5$ and its gross profit percentage was $4\mathrm{.}1$ percent. Why was Arctic Cat more likely than Chander Northwest to require a write$-$down for LCM$/$NRV$?$