1) A production process has six subsequent stages, each with their own specific resources and performing crucial tasks. Four of these stages have a capacity of 20 units per hour, while the other two stages have a capacity of 10 units per hour. What is the best conclusion?

Both stages with a capacity of 10 units per hour can be considered bottlenecks.

There are no bottlenecks in this production process.

The four stages with a capacity of 20 units per hour can be considered bottlenecks.

The two stages with a capacity of 10 units per hour should be eliminated from the process.

2) At Amsterdam's Glue-Less coffee joint, you wait, then you are seated at a table, then you leave. The wares are so cheap that on average a person has to wait 20 minutes before getting a table. On average there are 12 people waiting and 24 customers actually at tables. How long does a person spend, on average, at a table (not including waiting)?

15 minutes

30 minutes

40 minutes

60 minutes