The amount of unused length in the main rectangle:
LengthI = 240'
Current Length Used = I * SLength = 15 * 16' = 240'
Current Unused Length = LengthI - Current Length Used = 240' - 240' = 0'
Therefore, one can not change the length of
the parking lot in the main rectangle without changing the optimal
solution.
The amount of unused length in the edges:
LengthI = 240'
Current Length Used = I * SWidth = 30 * 8' = 240'
Current Unused Length = LengthI - Current Length Used = 240' - 240' = 0'
Therefore, one can not change the length of
the parking lot in the main rectangle without changing the optimal
solution.
The amount of unused width:
WidthJ = 350'
Current Width Used = J * SWidth = 43 * 8' = 344'
Current Unused Width = WidthJ - Current Width Used = 350' - 344' = 6'
Therefore, one can decrease the lot width
by up to 6' or increase the lot width by up to 2' (8' - 6') without
changing the optimal solution.
Conclusion:
One can decrease the lot width by 6', or increase the lot width by 6' without changing the optimal solution.