least and second least valu

Ex$.01$: Use Vogel's Approximation Method to find a basic feasible solution for the following.

$\backslash$table$[[$Sources$,$Destinations,Supply$],[$D$1,$D$2,$D$3],[$S$1,6,8,10,150],[$S$2,7,11,11,175],[$S$3,4,5,12,275],[$Demand$,200,100,300,600]]$