A railroad needs to move the maximum amount of material through its rail network. Formulate the LP model to determine this maximum amount based on the following network diagram. 
Definitions:
Systematic Comparison
The methodical analysis and evaluation of similarities and differences between items, concepts, or processes.
Job Requirements
The specific qualifications, skills, and experiences that an employer expects a candidate to possess for a particular position.
Qualifications
Qualifications are the education, skills, and experience that make an individual suitable for a particular job or task.
Résumé
A résumé is a document that summarizes a person's work experience, education, skills, and achievements, typically used to apply for jobs.
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