The three$-$station work cell illustrated in the figure below has a product that must go through one of the two machines at station $1($they are parallel$)$ before proceeding to station $2.$

a$)$ The bottleneck time of the system is $$ minutes per unit $($enter your response as a whole number$).$

b$)$ is the bottleneck station.

c$)$ The throughput time is $$ minutes $($enter your response as a whole number$).$

d$)$ If the firm operates $8$ hours per day, $5$ days per week, the weekly capacity of this work cell is $$ units $($enter your response as a whole number$).$