Question: For each of these problems about a subway system, describe a weighted graph model that can be used to solve the problem. a) What is

For each of these problems about a subway system, describe a weighted graph model that can be used to solve the problem.
a) What is the least amount of time required to travel between two stops?
b) What is the minimum distance that can be traveled to reach a stop from another stop?
c) What is the least fare required to travel between two stops if fares between stops are added to give the total fare?

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