Question: Activity Normal time ( day ) Crash time ( days ) Normal cost Crash cost Predecessor A 8 6 $ 1 , 0 0 0

Activity Normal time (day) Crash time (days)
Normal cost
Crash cost Predecessor
A 86 $1,000 $1,600---
B 107 $2,000 $2,600---
C 54 $500 $1,000 A
D 97 $4,000 $4,200 A, B
E 21 $3,000 $4,000 C, D
Which activity should be crashed first to cut one day from the project's duration; how much is added to project cost?

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