Answer:
Economic Production Quantity = 233.55 boxes per month =234 Boxes
Explanation:
EPQ = [tex]\sqrt{\frac{2KD}{h(1-x)} }[/tex]
K= Set up cost = $60
D =Demand rate = 400
H= holding cost = $2
x= Demand Rate / Production Rate = 400/ (36*20) =0.56
substitute values into formula
EPQ = [tex]\sqrt{\frac{2*60*400}{2(1-0.56)} }[/tex]
= 233.55 Boxes per month