Answer:
3) 28.28.
Step-by-step explanation:
In order to find the answer we need to establish the EOQ equation which is:
where:
s=the cost of the setup
d=demand rate
h=cost of holding
Because demand is 200/month so d=200,
the ordering cost is $20/month so s=20, and
the carrying cost in $10/month so h=10.
Using the equation we have:



So, answer to 'the order quantity for product' is 3) 28.28.