AI Summary & Key Takeaways
AI InsightThe ideal time for the replacement of the studied MF375 farm tractors was determined to be 9 years and the polynomial model was determined to be the best mathematical model for predicting the ideal time for replacing the studied MF375 farm tractors.
📌 3 Key Takeaways
Abstract
Broadly, this study aimed at determining and modeling the ideal time for replacing the studied MF375 farm tractors operated in Mapel and Rajaf East areas of the Central Equatoria State of South Sudan. Specifically, it aimed at establishing the numerical values for the variable cost parameters, determining the ideal time for replacing the studied MF375 farm tractors, and modeling the ideal time for replacing the studied MF375 farm tractors. Economical data including the cost for maintaining and repairing, lubricants and lubrication, oil and fuel filters, grease and greasing, tire replacement, fuel, and the tractor operator cost, in addition to the annual hours of operation and the purchase or list price for the studied MF375 farm tractors were collected for this study using well-structured questionnaires. Microsoft Excel, 2010 was employed to carry out a regression analysis on the accumulated total cost per hour which was labeled on the Y-axis because it was regarded as a dependent variable and the age of operation for the studied MF375 farm tractors which was labeled on the X-axis because it was regarded as an independent variable. The ideal time for the replacement of the studied MF375 farm tractors was determined to be 9 years and the polynomial model was determined to be the best mathematical model for predicting the ideal time for replacing the studied MF375 farm tractors.