The table above is a matrix of three files and three columns. In this matrix, we already have the rows indicating workers, and we can see this graphically as follows:
As we can see in the previous graph, element b is located in the first row and second column, and it is described as the element M(1,2).
Therefore, the element of the matrix W (1, 2) is given by the value in the first column and the second column of this matrix: 21.
