Question: The following digraph represents a network flow problem with values at nodes showing net demand. 1 2 3 -100 -50 80 (a) Verify that total

The following digraph represents a network flow problem with values at nodes showing net demand.

1 2 3

-100

-50 80

(a) Verify that total supply exceeds total demand.

(b) Add a new sink to create an equivalent network with total supply equal to total demand.

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