Abstract
The research includes two parts; the first is the theoretical mathematical analysis of the economic order quantity with its types of application. It includes the sequential solving method (the experimental method), the graphic curve method, and the algebra equation method (the mathematical method) which was used as the basis of carrying out the application part of the research. The practical part includes application at Nineveh Drug Industry and Medical Appliances/Nineveh (NDI) on a certain number of storage items and the application is to be carried out by MS Excel to calculate the economic order quantity by using computer to calculate the previously mentioned storage items, comparing the results and outcomes with those of the method currently used for ordering and buying and demonstrating the difference in total costs between both methods. Costs are calculated by the above-mentioned industry's archive files. The application is carried out for both methods, current and suggested the economic order quantity method. .