When the right-hand sides of two constraints are each increased by one unit, the objective function…

➤ How do you compute the combined objective change when two RHS values increase?
Add each constraint’s dual price multiplied by its RHS change, provided both changes keep their constraints inside allowable ranges and leave the optimal basis intact. If either change causes a basis shift or a constraint becomes nonbinding, re-solve the model to obtain the correct new objective value.