1. ## Linear Programing

this is a problem i have been set and i haven't got a clue how to go about it...anybody got any tips to get me started or links to somewhere on the web that might help me

2. Profit: $\displaystyle P=210O_1+175O-2+190O_3-28(A+B)$ - other cost terms that I missed originally because it was difficult to view the question and type the post at the same time.

Outout1: $\displaystyle O_1-(0.08B+0.2C)=0$

Output2: $\displaystyle O_2-(0.4C+0.3D)=0$

Output3: $\displaystyle O_3-(0.1A+0.4D)=0$

Intermediate: $\displaystyle I=0.5A+0.55B+0.3R\ge0$

Waste: $\displaystyle W=0.4A+0.37B+0.4C+0.3D-R=0$

Non-negativity: $\displaystyle O_1,O_2,O_3\ge 0$

CB

3. Originally Posted by CaptainBlack
Profit: $\displaystyle P=210O_1+175O-2+190O_3-28(A+B)$ - other cost terms that I missed originally because it was difficult to view the question and type the post at the same time.
OK the corrected Profit (per hour)

Profit: $\displaystyle P=210O_1+175O-2+190O_3-28(A+B)-32A-31B-25C-35D-45R$

$\displaystyle A \le 50$

$\displaystyle B \le 50$

$\displaystyle C \le 50$

$\displaystyle D \le 50$

$\displaystyle R \le 60$

Where $\displaystyle O_1,O_2,O_3,A,B,C,D,R$ are in units of tonnes per hour

CB