Activities A and B have a finish to finish relationship and early start and finish times as shown. What is the result of incorporating a 4 day lag between activities C and B?
A) The early finish for A increases to 31.
B) The early start time for A increases to 24.
C) The early finish time for B increases to 31.
D) The early start time for D falls to 23.

Question

Activities A and B have a finish to finish relationship and early start and finish times as shown. What is the result of incorporating a 4 day lag between activities C and B? 
A) The early finish for A increases to 31. 
B) The early start time for A increases to 24. 
C) The early finish time for B increases to 31. 
D) The early start time for D falls to 23.

Quizplus · Accepted Answer

Adding a 4 day lag between C and B means that B can't start until 4 days after C finishes. Since B has a finish to finish relationship with A, A's early finish time will also be delayed by 4 days. Therefore, the early finish time for B increases to 31. None of the other options are affected by adding a lag between C and B.

Activities a and B Have a Finish to Finish Relationship