You have inherited the project management of a system implementation. The implementation of a group project has been broken down into the following activities, whose durations and dependencies are as shown below:

Task A B C D E F G H I J K L M

Task time 5 2 4 5 6 7 4 5 1 4 3 7 4

Preceding task - A A B C D E D C I,F G,J H,K L a) Calculate the earliest and latest start and finish times for all activities b) Compute the slack for each task c) Find the critical path

d) Discuss the three elements of the triple constraint and why is an understanding of their relative weight important in exercising control over a project?