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 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 to you to help. Activity Predecessor t Early Early Late Late
Start Finish Start 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
I C 28
J G, H,J 36
1. What is the late finish time for activity K?
a. 36.
b. 35.
c. 34.
d. 33.
e. none of the above.
2. What is the slack time for activity A?
a. 9.
b. 10.
c. 11.
d. 12.
e. none of the above.
3. What is the stack time for activity H?
a. 1.
b. 2.
c. 3.
d. 4.
e. none of the above.
4. The normal cost for an activity is $7,000 and the crash cost is $12,000. The normal time to complete this activity is 8 days and crash time is 4 days. If this activity is crashed by 2 days it will cost an additional:.
a. $1000.
b. $1250.
c $2000.
d. $2500.
e. none of the above.