# Least Cost Method and Vogel's Approximation method

**Tutor description**

The least-Cost Method is a method for computing a basic feasible solution of a transportation problem, where the basic variables are chosen according to the unit cost of transportation. This method is very useful because it reduces the computation and the time required to determine the optimal solution. The following steps summarize the approach. The Vogel Approximation (Unit penalty) method is an iterative procedure for computing a basic feasible solution of a transportation problem. This method is preferred over the two methods i.e. North West Corner Rule and Least cost Method, because the initial basic feasible solution obtained by this method is either optimal or very close to the optimal solution. The standard instructions are paraphrased below:

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