QUESTION $9$

Panini, a popular sandwich shop, offers $3$ types of sandwiches: Grill vegetables, grilled chicken and pastrami. The table below provides demand data:

$\backslash$table$[[,$Grilled Vegetables,Grilled Chicken,Pastrami$],[$Demand per hour,$25,25,10]]$

$\backslash$table$[[$Step$,$Grilled Vegetables,Grilled Chicken,Pastrami$],[$Cut bread,$75$ minutes,$\mathrm{.}75$ minutes,$\mathrm{.}75$ minutes$],[$Grill$,1\mathrm{.}9$ minutes,$1\mathrm{.}9$ minutes,$-],[$Slice meat,$-,-,3$ minutes$],[$Toast$,2$ minutes,$2$ minutes,$2$ minutes$],[$Wrap$,\mathrm{.}75$ minutes,$\mathrm{.}75$ minutes,$\mathrm{.}75$ minutes$]]$

Suppose Panini employs $1$ worker at each step. What is the implied utilization of the bottleneck of this process?