Final answer:
The order size for item X should be 200 units to minimize costs. The annual cost for ordering item X is $900.
Step-by-step explanation:
To determine the order size for item X, we need to consider the economic order quantity (EOQ) formula. EOQ is calculated as the square root of (2DS/H),
where D is the annual demand, S is the ordering cost per order, and H is the holding cost per unit per year.
In this case, the annual demand is 2,000 units, the ordering cost is $10, and the holding cost is $5 per unit. Plugging in these values, we have EOQ = √(2 * 2,000 * 10 / 5)
= 200 units.
Therefore, the order size for item X should be 200 units to minimize costs.
The annual cost for ordering item X can be calculated using the EOQ formula:
Annual cost = D/Q * S + Q/2 * H,
where D is the annual demand, Q is the order size, S is the ordering cost per order, and H is the holding cost per unit per year.
Plugging in the values,
we have Annual cost = 2,000/200 * 10 + 200/2 * 5
= $400 + $500
= $900.