Answer the following questions by using only the printout obtained in $($a$).($This means that you may not change the values of the relevant parameters in the model and do reruns with SOLVER.$)$ Explain how you arrive at your answers. $($b$)$ Suppose that instead of R$300,$ each ruby costs R$750.$ Will Zales still buy extra rubies? If so$,$ will the production plan and profit change? $(5)($c$)$ Suppose that Zales was required to produce at least $23$ type $2$ rings. What would Zales$$ profit now be$?(7)($d$)$ What is the most that Zales will be willing to pay for another hour of jeweller$$s labour time? How many hours may be obtained at this price? $(4)($e$)$ What is the most Zales will be willing to pay for another sapphire? $(3)($f$)$ Zales discovers another $20$ rubies in his safe. How will the availability of these extra rubies change his production plan and profit? $(3)($g$)$ The market demand changes and Zales must now produce at least $22$ type $1$ rings and at least $23$ type $2$ rings. How will this change his production plan and profit? $(3)$