Consider the following linear programming problem:

Maxz$=30x_1+36x_2$

Subject to:

$3x_1+1x_{2}300$

$4x_1+5x_{2}320$

$x_1,x_{2}0$

What is the $Z$ in the optimal point of this problem?

$2000$

$2400$

$3000$

$3600$

None of the above