The total completion time on a project is 25 days. Task A is planned to take seven days while Task B is planned for five days and Task C is planned to take eight days. The tasks have a serial relationship. How much slack does the project have?

A) Negative 5 days slack.

B) Positive 5 days slack.

C) Positive 17 days slack.

D) Positive 3 days slack.

B) Positive 5 days slack.

Explanation:

The computation of the number of slacks in the project is

= Total completion time on a project - Task A planned days - Task B planned days - Task C planned days

= 25 days - 7 days - 5 days - 8 days

= 5 days slack

Basically we deduct the total planned days taken by each task from the total completion time on a project so that the number of slacks has come.