ABC Co is a distributor of industrial fans The annual demand

ABC Co is a distributor of industrial fans The annual demand for their mini-fan is 7,680 units These fans cost $62 each The annual carrying cost for their warehouse is 29% and for their in-transit shipping it is 16% Their ordering costs are $20 per order They operate 320 days per year The in-transit shipping time for this item is 7 days
How many units are in the average in-transit inventory?