PMaN $=40x_i+50x_2-100$

$2x_1+x_{2}12$

$-4x_1+5x_{2}20$

$x_1+3x_{2}15$

i$)$ What is ite Magginal valee of an additional unit of constraint $1?$ over what range is This value valid?

ii$)$ Given choice of selating more of constauint $2$ and $3.$ Which should be mangemt selat why? ii$)$ What unit profit would have to make from $x_1?$ te management should decide to prodlle if

iv$)$ Managent is consedring change in poufit of $x_2.$ from $52$ to $60$ : Whould This change offect the solution.