a vendor $160$ miles away. Brenda is busy running the store and seldom has time to review store inventory status and order the right quantity at the right time. She collected the following data:

$\backslash$table$[[$Demand $=10$ boxes per week,Store open $=48$ weeks$/$year$],[$Order cost $=$$$\frac{36}{?}$ order,Lead$-$time $=5$ weeks$],[$Item cost $=$$$\frac{72}{?}$ box,Std$.$ deviation in weekly demand $=4$