Source | Destination | Supply | ||
1 | 2 | 3 | ||
1 | 25 | 45 | 10 | 200 |
2 | 30 | 65 | 15 | 100 |
3 | 15 | 40 | 55 | 400 |
Demand | 200 | 100 | 300 |
Solution:
For the given problem, the total supply is not equal to the total demand.
The given problem is an unbalanced transportation problem. To convert the unbalanced transportation problem into a balanced problem, add a dummy destination (dummy column). i.e., the demand of the dummy destination is equal to,
Thus, a dummy destination is added to the table, with a demand of 100 units. The modified table is shown in Table 2 which has been converted into a balanced transportation table. The unit costs of transportation of dummy destinations are assigned as zero.