An unbalanced transportation problem is one where the supply does not match up the demand.
In case of transportation system, feasible solution is to be obtained. However, it is taken that no solution can be obtained without making use of balanced problem. So, to ensure that those problems that have a lack of equilibrium can get a balanced feature, certain external factors or dummy destinations are introduced. Only then can this side be balanced in a correct manner.
However, it is to be remembered that this dummy column whenever is added should have a demand ranging to 100 units. Once this balance is introduced, solving problems associated with this concept becomes easier.
Here are some of the sums that have been given, and solving it correctly would help in conceptual clarification.
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