Question

question is as below.

Answer 1

in the area bounded by \[x \ge0 \] , \[y \ge 0\] , \[2x+y \le 20\],and \[3x+4y \le60\] the maximum value of x+y-4 is?

Answer 2

so this is another simplex problem
Like the one you gave before
But perhaps, we should approach it like this
Since all these simplex problems are essentially 2-D
two variables, they are easily amenable to graphical solutions

That way we can avoid the complications of choosing the pivots and all that in the simplex tableau

which I just don't want to do really :P
Okay so - one moment
making a graph...