Question: The following interior activities need to be completed before the new Oil Slick auto service store can be opened. The contractor is not sure when

The following interior activities need to be completed before the new Oil Slick auto service store can be opened. The contractor is not sure when all the work will be done, but was able to come up with the following estimates (in days).

activity predecessor Optimistic time Most likely time Pessimistic time
A (install floors) ------ 5 6 8
B (paint) A 15 17 19
C (install signs) B 4 12 20
D (final cleaning) C 6 8 10

If all these remaining activities are critical, what would be the expected completion time, in days, of the remainder of the project? path (A,B,C,D)

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