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Graph Theory: Minimal path assignment. A product must be ground, polished, weigh

ID: 3420938 • Letter: G

Question

Graph Theory: Minimal path assignment.

A product must be ground, polished, weighed and inspected. The grinding must precede the polishing and the weighting and the polishing must precede the inspection. Grinding takes 7 units of time, polishing takes 10 units of time, weighting takes 1 unit of time for an unpolished product and 3 units of time for a polished one, and inspection takes 2 units of time for an unweighed product and 3 units of time for a weighed one. What is the fastest production schedule?

Explanation / Answer

A product must be ground, polished, weighed and inspected. The grinding must precede the polishing and the weighting and the polishing must precede the inspection. Grinding takes 7 units of time, polishing takes 10 units of time, weighting takes 1 unit of time for an unpolished product and 3 units of time for a polished one, and inspection takes 2 units of time for an unweighed product and 3 units of time for a weighed one. What is the fastest production schedule?