ABSTRACT
Most manufactures sell their products through sale agents and are not directly engaged with consumers. Therefore, determination of optimal location and optimal number of sale agents is highly significant in their planning. The main objective of this paper is theoretical modeling of sale agents and expansion of location models through a method in such a way that the assumptions are closer to reality and could provide the required conditions for selection of optimal location and optimal number of sale agents. To this end, Spoke model of Chen & Riordan (2007) and Lijesen & Reggiani (2013) has been used. In each street n consumers have been uniformly located. The results showed under what conditions is the city center the optimal location of sale agents and when the city margin is the optimal location and indicated that the cost of launching sale agents is the main factor in making such decision. Moreover, the results showed that the optimal number of sale agents is a function of the number of streets, the customers valuation of each unit of product, the price of sale agents, the number of consumers on each street, the earned profit by the sale agents and the cost of launching sale agents.

Keywords: Locating, Sale Agents, Uniform Distribution, Spoke Model.

JEL Classification: L11, L81, C16, C02