The linear constraints, for which the shaded area in the figure is the feasible region of an LPP, are:
Answer & explanation
Correct answer: option 3
corner points → (0, 0), (0, 50), (40, 0), (30, 20)
from corner points and graph $x,y≥0$
and line
$x + y ≤50$
$2x + y ≤ 80$
as both curves are under the line $x+y=50$ and $2x+y=80$ respectively.