Solution :
It is given that :
Additional time obtained per week from milling machines = 350
The incremental cost = $ 2 per hour
Therefore, the allowable increase for milling operation is 400.
This indicates that we can accommodate additional constraint RHS of [tex]200[/tex] hours.
Also we have to consider the impact on the profit of 2.25 which is an incremental cost of [tex]1.5[/tex] is well affordable.