Adeyeye, A. D.Charles-Owaba, O. E.2018-10-112018-10-1120081012-277XSouth African Journal of Industrial Engineering 19(2), pp.197-209ui_art_adeyeye_goal_2008http://ir.library.ui.edu.ng/handle/123456789/1957The GP model was developed for production planning in a toothpaste factory. Two objectives were distinguished: minimization of processing cost, and maximization of the capacity utilization of production facilities. Two priority structures were used to explore the trade-off options. When processing cost minimization was assigned the first priority, the utilizations of Processing Plant 1 and Filling Machine 2 were 20.32% and 0.18% respectively. When capacity utilization was assigned first priority, the processing cost increased by 7.55% but capacity utilization improved. The least utilized facility was Filling Machine 1 with a utilization of 43.85%.enArticle