SEC Company has a demand for $1600$ bearings each year. The cost of a bearing is AED $50.$ The

ordering cost is AED $36$ per order and holding cost is $25\%$ of the unit cost of the bearing.

$1)$ What are the economic ordering quantity and the total annual inventory costs $($sum of the

annual purchasing $($C D$),$ annual ordering cost, and annual holding costs$)?(10$ points$)$