c$)$ Using your solution:

i$.$ What is the optimal solution?

ii$.$ Develop the appropriate ranges for the coefficients of the objective function. What is your

interpretation of these ranges?

iii. Develop and interpret the ranges of feasibility for the right$-$hand$-$side values.

iv$.$ Managers at the firm have determined that the firm can purchase a new production

machine that will increase available production time from $19$ to $23$ hours. Will this change

affect the optimal solution? Explain your answer.

$[13$ Marks$]$

$[$Total $25$ Marks$]$