Chapter 5 Project management
Q5-1.
b
Answer
Explanation
The number of days required before reduction is as follows:
Work A (3 days) + Work C (5 days) = 8 days
Work B (6 days) + Work D (3 days) = 9 days
Therefore, the number of days required before reduction is nine (9) days.
The number of days required after reduction is as follows:
Work A (3 days) + Work C (4 days) = 7 days
Work B (3 days) + Work D (3 days) = 6 days
Therefore, the number of days required after reduction is seven (7) days.
The number of days that can be reduced is two (2) days (= 9 − 7 days).
Q5-2.
A
3
C
5
B
6
D
3
A
3
C
4
B
3
D
3
a
Answer
Explanation
The plan is to complete 25 work items at the end of the fifth day. Since the plan is to complete
five (5) work items per day, the delay is one (1) day based on the difference from the number
of days it should have taken to finish the work items.
Q5-3.
c
Answer
Explanation
The project plan is a document that describes various aspects such as important project matters and the project framework, method of advancing the work, schedule method, and method
of management.
Q5-4.
c
Answer
Explanation
The workload in one (1) day for each person is as follows:
Workload in one (1) day for Mr. A = 1/24
Workload in one (1) day for Mr. B = 1/12
The workload in one (1) day if both persons work together is 3/24 (= 1/24 + 1/12).
However, since 25% is subtracted from the workload in one (1) day for preliminary discussion, the workload in one (1) day is 3/32 (= 3/24 × 3/4).
Therefore, the workload by days is as follows:
After one (1) day = 3/32
After two (2) days = 6/32
After three (3) days = 9/32
•
•
•
After 10 days = 30/32
After 11 days = 33/32
Therefore, the work will be completed after the 11th day.
9