Answer:
365.15 units
Step-by-step explanation:
The computation of the economic order quantity is shown below:

where,
Annual demand is
= 30 units × 300 days
= 90,000 units
ordering cost is $50
Carrying cost is
= $45 × 15%
= $6.75
Now placing these values to the above formula
So, the economic order quantity is

= 365.15 units
We simply applied the above formula so that the EOQ could come