The standard processing rate for TiniTotes is $3$ hours in fabrication, $2$ hours in sewing, and $1$ hour in assembly. TubbyTotes require $4$ hours in fabrication, $1$ hour in sewing and $3$ hours in assembly, whereas ToddleTotes require $2$ hours in each station.

The Excel layout and LP Sensitivity Report for Strollers$-$to$-$Go's problem are shown in Figure $4\mathrm{.}30$ and Figure $4\mathrm{.}31,$ respectively. Each of the following questions is independent of the others.

a$)$ How many strollers of each type should Strollers$-$to$-$Go make? What is the profit? Which constraints are binding?

$($b$)$ How much labor time is being used in the fabrication, sewing, and assembly areas?

$($c$)$ How much would Strollers$-$to$-$Go be willing to pay for an additional hour of fabrication time? For an additional hour of sewing time?

$($d$)$ Is Strollers$-$to$-$Go producing any product at its maximum sales level? Isit producing any product at its minimum level?