Question 5: 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). predecessor Activity A install floor) B (paint) C (install signs) D (final cleaning) A B optimistic time 6 6 4 3 most likely time pessimistic time 8 10 8 10 7 10 5 7 If all the above activities are critical, what would be the expected completion time, in days, of the remainder of the project