The slack time for each is as follows (in weeks) Critical path is A B

Question: The slack time for each is as follows (in weeks) Critical path is A B F Non critical are C and E A 0 B 0 C 1 E 1 F 0 Can someone help me learn how to calculate: What is the total slack for the non critical paths in the project?The slack time for each is as follows (in weeks)
Critical path is A B F
Non critical are C and E
A 0
B 0
C 1
E 1
F 0
Can someone help me learn how to calculate:
What is the total slack for the non critical paths in the project?