The figure below shows the nodes (A-I) and capacities (labelled on arcs in packages/day) of a shipping network. The firm would like to know how many packages per day can flow from node A to node I. 
How many transshipment nodes are present in this problem?
Definitions:
Flow Chart
A diagram that displays a process or system using symbols and arrows to illustrate the sequence of steps.
Visual Learner
An individual who learns best through visual means such as diagrams, charts, and videos.
Key Points
Essential or main ideas, concepts, or elements of a discussion, argument, or presentation that are emphasized or should be focused on.
Professional Polish
The level of sophistication, grooming, and manners expected in a professional setting, contributing to a positive image.
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