HI,

So I am trying to formulate a linear program to minimize shipping costs for a list of 1000 items of varying sizes. I have total of 10 options for box size and each has a different shipping cost. For the lowest shipping cost, I will put each item in the appropriate box but I want to buy only 3 different box sizes. How do I formulate this problem? Breaking my head over this for a week now..

Please help.

I did not find the right solution from the internet.

References:-
https://www.math10.com/forum/viewtopic.php?f=33&t=1389
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Thanks