The following two questions are according to the problem statement in below.

A factory uses $20$ packages of raw material a day to meet the demand. The factory operates $300$ days a year. Holding cost for each package is $ $3/$year$,$ and it costs approximately $$10$ to order and receive a shipment of raw materials.

Question $4(2$ points$)$

Saved

What order quantity would minimize total annual ordering and holding costs?

Question $4$ options:

$289\mathrm{.}38$

$200$

$72\mathrm{.}11$

$78\mathrm{.}22$

Question $5(2$ points$)$

Determine the average inventory per year and how long $($in working days$)$ does each order quantity last?

Question $5$ options:

Average Inventory$=200,$ Order quantity last$=15$ days

Average Inventory$=200,$ Order quantity last$=10$ days

Average Inventory$=100,$ Order quantity last$=20$ days

Average Inventory$=100,$ Order quantity last$=10$ days