Wonder Shed Inc. (Example 4.3) produces, in addition to the standard model, a deluxe version for the discriminating customer. The production process for the two models is identical and is depicted in Figure 4.1. The activity times for deluxe models is listed in Table 4.8. All the times mentioned represent flow time at the various activities, and include the effects of waiting.
a. Compute the process flow time for producing a deluxe shed.
b. What is the impact on flow time of the process if the flow time of Activity 2 is increased to 40 minutes?
c. What is the impact on flow time of the process if the flow time of Activity 3 is reduced to 40 minutes?