Model the system of Exercise 5 as a network assuming, in addition to the limitations on the wells, that city A requires 4 units, city B requires 3 units, and city C requires 4 units.
Exercise 5
Model the system of Exercise 4 as a network assuming that well w1 can pump at most 2 units, well w2 at most 4 units, and well w3 at most 7 units.
Exercise 4
The following graph represents a pumping network in which oil for three refineries, A, B, and C, is delivered from three wells, w1,w2, and w3. The capacities of the intermediate systems are shown on the edges. Vertices b, c, d, e, and f represent intermediate pumping stations. Model this system as a network.
