Least Cost Routing

Aug 3, 2009

im working on a VoIP company, and having a hard time to figure out a result on a little time.

the problem is finding a "least cost routing" wherein you will find the cheaper to higher price, and putting the results on a designated columns:

I am including an image, sorry if the image seems to be heavy and large:

as you can see: Column C contains the sale rate for the client, while Columns D to I, are the buy rates from our source carriers.

While the columns K to P, are the columns where should one source carrier should be fitted base on the buy rates, that is best fitted to the sale rate.

Red marks=are not suitable or non-profitable buy rate for the sale rate.

Sorry for the bad english, but i hope you get what i mean. this is only a sample from our Internal data.

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Whenever or not I should use VBA or ordinary formulas in Excel in order to do Vehicle Routing With Two-Dimensional Loading Constraints case. What I need is when I have coordinates of four bottom-right corners:

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10 24
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Edit:
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