Question

- Setup linear equation.

Answer 1

I have:

Maximise 12x + 18y.

12x+15y = 600
18x + 9y = 630

My lecturer said Z = 720

I can't get it...

Answer 2

Wondering if my setup equations are off... :)

Answer 3

Maximise
\(\large P = 12x + 18y\)
subject to
\[\large 12x+15y \le 600\]\[\large 18x + 9y \le 630\]\[\large x \ge 0\]\[\large y \ge 0 \]
http://www.wolframalpha.com/input/?i=12x%2B15y+%5Cle++600,+18x+%2B+9y+%5Cle++630,+x+%5Cge+0,+y+%5Cge+0
Max. seems to be at (25, 20) with a value of 660

Maybe he made a mistake.