a$.$ What is the capacity of each resource in the bank $($drive$-$through lanes, tellers, ATM, and specialist$)$ in number of customer$-$arrivals per hour?

b$.$ What is the system capacity of the bank in number of customer$-$arrivals per hour? Identify the bottleneck$($s$).$ What is the slack of each resource in total number of customer $-$arrivals per hour?

c$.$ If the bank can add $2$ additional unit of resource per bottleneck resource$($s$),$ what would be the new system capacity and bottleneck$($s$)?$