1. Suppose there are four steps in a process with steps A and B are done in parallel. The output of A and B is assembled in step C followed by a quality check in step D. The capacities of steps A, B, C, and D are 20, 25, 14, and 45 units/day. What is the capacity of the process in units/hour?
2. Suppose there are four steps in a process with steps A and B are done in parallel. The output of A and B is assembled in step C followed by a quality check in step D. The activity times of steps A, B, C, and D are 9, 15, 18, and 10 minutes. What is the minimum flow time of the process?
3. Suppose there are four steps in a process with steps A and B are done in parallel. The output of A and B is assembled in step C followed by a quality check in step D. The activity times of steps A, B, C, and D are 10, 12, 14, and 15 minutes. Suppose Step E is added following step D with activity time of 12 minutes and it has one worker. Which of the following is true?
A. The capacity of the process will reduce since 12 additional minutes will be needed.
B. The minimum flow time will increase by 12 minutes.
C. The capacity of the process will increase since now there is an additional worker.
D. Both b. and c. are correct.