A manufacturing process has four stations. Station $1$ can process a unit in ten minutes. The second station takes five minutes. The third station has two identical machines, each of which can process the unit in fifteen minutes $($each unit only needs to be processed in one of the two machines$).$ Then the unit moves to assembly $($Station $4),$ which takes eleven minutes.

a$.$ What area is the bottleneck?

What is the bottleneck time?

What is the throughput?

What is the hourly capacity:

What if an additional machine was added to Station $4,$ in parallel. What would the tleneck station$/$time$,$ and hourly capacity?