Find the optimum value for each objective function given in Problems 47-51.

Maximize \(W=30 x+20 y\) subject to the constraints of Problem 35.

Data from problem 35

\(\left\{\begin{array}{l}x \geq 0 \\ y \geq 0 \\ 2 x+y \leq 12 \\ x+2 y \leq 9\end{array}ight.\)