GE Aircraft Engines uses 1200 units of a certain spare part that costs $2500 for each order with an annual holding cost of $2400/unit. Calculate the...

GE Aircraft Engines uses 1200 units of a certain spare part that costs $2500 for each order with an annual holding cost of $2400/unit. Calculate the total cost for order sizes of 25, 40, 60 and 100. Also compute the economic order quantity and the associated inventory cost.