The activities of W, X, Y and Z are the direct precursors of A. What is the earliest starting time for A, if the activities of earliest finishing times are 12, 15, 10 and 6?
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Remember these path routing rules for network diagrams:
- Forward Pass (Earliest Times): Use the MAXIMUM value of preceding finish times when paths merge.
- Backward Pass (Latest Times): Use the MINIMUM value of succeeding start times when paths split.