Klassen toy company, inc., assembles two parts (parts 1 and 2): part 1 is first processed at workstation a for 12 minutes per unit and then processed at workstation b for 20 minutes per unit. part 2 is simultaneously processed at workstation c for 15 minutes per unit. work stations b and c feed the parts to an assembler at workstation d, where the two parts are assembled. the time at workstation d is 10 minutes.

(a) what is the bottleneck of this process?
(b) what is the hourly capacity of the process?

a) The bottleneck of the process is work station B

b) 1,43 Units per hour

Explanation:

a) The bottleneck of a process is the activity in a process chain that limits the capacity of the whole process.

In this case we have two parts  

As we can see, the workstation B is the bottleneck of the process because it limits  the capacity of the whole chain.

b) lets calculate the how long it takes to produce 1 unit:

We have already calculated that it takes 32 minutes  to have the two parts in workstation D. After thata they will be assembles fpr 10 more minutes, so it takes 32+10= 42 minutes to produce one unit.

Now, let's see how many pieces we can produce in an hour: (60 min/ hour)/42(min/unit) = 1,43 units /hour