•3.30 Three activities are candidates for crashing on a pro- ject network for a large computer installation (all are, of course, critical). Activity details are in the following table: ACTIVITY CESSOR PREDE- NORMAL NORMAL CRASH COST CRASH COST TIME TIME A 7 days $6,000 6 days $6,600 в 2 days 9 days B A 4 days 1,200 3,000 B 11 days 4,000 6,000 a) What action would you take to reduce the critical path by 1 day? b) Assuming no other paths become critical, what action would you take to reduce the critical path one additional day? c) What is the total cost of the 2-day reduction? Px

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