Maximize $p = 4 x + 9 y$ Subject to the Following (Using the Simplex Method)

Short Answer

Maximize $p = 4 x + 9 y$ subject to the following (using the simplex method).
​ $\begin{aligned}8 x + 5 y & \leq 80 \\x + y & \geq 5 \\5 x + 8 y & \leq 80 \\x \geq 0 , y & \geq 0\end{aligned}$ ​ $p =$ __________
​ $x =$ __________
​ $y =$ __________