Answer: $1,487.56
Step-by-step explanation:
Total annual inventory cost = Ordering cost + Inventory Holding cost
Ordering cost = Number of orders * ordering cost
= (Annual demand / Order quantity) * 35
= ((52 weeks per year * 70) / 90) * 35
= $1,415.56
Inventory holding cost:
= Average inventory * holding cost
= (90 gallons / 2) * (40% * 4)
= $72
Total annual inventory cost = 1,415.56 + 36
= $1,487.56