Answer:
The formula is not used if consumer demand and ordering and holding costs are not constant.
Explanation:
E.O.Q formula measures the ideal quantity of order a company should purchase in order to minimize its inventory costs, such as holding costs and shortage costs. The formula, however has its limitations, in a way that it assumes that the costumer demand is constant and ordering and holding costs remain constant. This makes formula hard to use in case of seasonal changes of demand, inventory costs or lost sales revenue due to inventory shortages.