Fill in all of the missing information for activity A and for activity K
Carrie meticulously calculated the early and late start and finish times for her latest project and recorded them using different colors of sand on a pristine slab of white marble. She used red for late start and late finish times and green for early start and early finish times. Activity durations and their identifiers were written with black sand. She finished her task and had an opportunity to admire her work only briefly before a colleague came by and swept most of it away. Sadly, this was before Carrie could record the numbers on a more permanent medium, so now she turns to you to help.
Activity Predecessor Duration Early Start Early Finish Late Start Late Finish
A - 10
B - 7 11
C A 7
D A 15 14
E B 11 19
F B 10
G D,E 24
H F 24
J C 28
K G,H,J 36
Answer: Activities A and K must both be on the critical path, so A has early and late start times of 0. The early finish for A was given as 10, so its late finish must also be 10, hence its duration must be 10. The late finish for activity K was provided as 36, thus its early finish must be 36. The late finish for activity J, its immediate predecessor, was given as 28, so K's early and late starts must both be 28. K's duration is then 8.
Activity Pred Duration Early Start Early Finish Late Start Late Finish
A -- 10 0 10 0 10
K J,G,H 8 28 36 28 36
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