Use decimal point. Provide one digit after the decimal and do not round.

Consider a cafe process with three steps in series (one after the other).

Step 1 - take order and heat food item- 5 min per customer;

Step 2-prepare coffee drink - 6 min per customer;

Step 3- Give food and drink and take payment- 3min per customer.

Step 1 and Step 3 are the responsibility of cashiers. Step 2 is the responsibility of baristas. There is one cashier and two baristas.

Assume there is no shortage of demand.

What is the cycle time (bottleneck time) of the process? [a] minutes

What is the capacity of the cafe in customers per hour? [b] customers per hour

Suppose you change the job descriptions and now the cashier performs Step 1 only and the barista performs Step 2 and Step 3.

What is the capacity of the cafe in customers per hour now? [c] customers per hour

Now assume that there are two types of customers. 20% of the customers do not demand a coffee drink so skip Step 2. Continuing under the assumption that Baristas are performing Step 2 and Step 3:

What is the theoretical flowtime of an average customer? [d] minutes

What is the capacity of the cafe in customers per hour? [e] customers per hour