A Retailer Can Purchase Units of a Perishable Item for 75

Short Answer

A retailer can purchase units of a perishable item for 75 cents each.The retailer sells the item for $2.00.Unsold items are worthless and will be discarded.If demand for the item can be approximated by a normal distribution having a mean of 150 and a standard deviation of 30,how many units should the retailer stock to maximize expected profit?
____________________ items