Q$1$: Given the following data for alpha industry in Tulkarm city. $[5$ marks$]$

$\backslash$table$[[$Total annual demand,$60000$ unit$],[$Cost of ordering,$25\frac{\text{\$}}{?}$ order$],[$Regular price,$8\frac{\text{\$}}{?}$ unit$],[$Holding cost$,0\mathrm{.}21$ from purchasing cost.$]]$

Find the followings and show detailed calculations

What is the optimal order quantity?

What is the number of orders?

What is the total inventory cost