When you post questions like this on the forum we ask that you please post the source of the question as well. Where did you find this question?
P.S. I agree with the 12 days answer. Process A starts on day 1 and ends on day 10. Process B starts on day 4 (3 day lag) and lasts for 9 days, ending on day 12. It is a FF relationship and the total duration is 12 days. I think that is correct.
I have been looking at this a bit more and I think you are actually correct. Actiivity A has a duration of 10 days and we need to count 3 days "lag" beyond day 10 which takes us through day 13. We count back 9 days from that to determine when activity B started which would be at the beginning of day 5. Total duration for A and B would then be 13 days as you stated. I had to remember that for a FF+3 relationship means that activity B finishes 3 days after activity A. My apology for any confusion as earlier, I had put the lag from the start of activity B and it needs to be added to the finish of activity A.
Was there any kind of Gantt chart or network diagram shown with the answer?
Moderators: Yolanda Mabutas, Ahmed Amin, Scott Gillard, Mary Kathrine Padua, ERIC BARTLETT, Gail Freedman, Kevin Nason, Steven Mudrinich, PMP, Mark Wuenscher, PMP, John Wolverton, Tracy Shagnea, PMP, Jada Garrett
This interview with Simona Fallavollita (LinkedIn Profile) was recorded at the magnificient Project Management Institute (PMI)® Global Conference 2017 in Chicago, Illinois. We discuss the how, what, why and when of the changes that are coming to the PMP exam.