Solve the following linear programming problem graphically:
Miximise `Z = x +2y` subject to the constraints :
`x+2y ge 100`
`2x-y le 0`
`2x +y le 200`
`x ge 0 , y ge 0`

Answer

maximum value = 400 at (0,200) and minimum value = 100 at (20,40) and (0,50) i.e, along the scgment joining (20,40)and (0,50).