6. In Problem 5, suppose that transshiping is allowed between silos 1 and 2 and silos 2 and 3. Suppose also that transshiping is allowed between farms 1 and 2, 2 and 3, and 3 and 4. The maximum two-way daily capacity on the proposed transshiping routes is 50 (thou-sand) lb. What is the effect of transshiping on the unsatisfied demands at the farms?