custom computers, inc. assembles custom home computer systems. the fan assemblies needed are bought for $24 each. annual demand is 7500 fan assemblies, the annual inventory holding cost rate is $4 per unit, and the cost to place an order is estimated to be $60. what is the optimal order quantity (rounded to the nearest integer)? (you found this number above in part f of problem 1) assuming that the fan assemblies are ordered in quantities equal to the optimal order quanitity, calculate the following: a. average inventory level b. the number of orders placed per year c. the total annual inventory holding cost d. the total annual ordering cost e. the total annual cost f. what does custom computers save per year in inventory costs by following the eoq model?