Faraba Company uses three $(3)$ machine$$ centres to produce two $(2)$ products x$1$ and x$2.$ The profit contribution of the products is D$20$ and D$25$ respectively. The total weekly availability of the machine centers$$ are $100$hours, $320$hours and $600$hours respectively the number of hours required by x$1$ and x$2$ in forming centers is $1$hour each, in stamping $4$hours and $2$hours in finishing centre is $6$hours$$ each for both product. The objective is to maximize$$ contribution