PMI Minnesota Virtual Professional Development Days 2020: Project Management, Next Evolution
September 28 & 29, 2020  Virtual
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Pooja
If I am not mistaken, this is a Finish to Start relationship because C canâ€™t start before both A and B are complete. If no other conditions exist between A and B, it also creates a convergence node as the start of C is tied with the finish of both A and B with a lead time from A of two weeks. RK
There is no information about the starts of A or B. Both need to finish before C can start (and A has a lag of 2 weeks for that).
So I would go with D, finish to finish. ...
1 reply by Rami Kaibni
Jun 27, 2020 1:35 PM
Rami Kaibni
...
ThomasI have to disagree. If C cannot finish before A and B finish then thatâ€™s a Finish to Finish relationship but the situation is C canâ€™t start before A and B finish so itâ€™s a Finish to Start relationship. Info about the start of A and B is irrelevant for what the situation is asking for. RK Jun 27, 2020 1:20 PM
Replying to Thomas Walenta
...
There is no information about the starts of A or B. Both need to finish before C can start (and A has a lag of 2 weeks for that).
So I would go with D, finish to finish. I have to disagree. If C cannot finish before A and B finish then thatâ€™s a Finish to Finish relationship but the situation is C canâ€™t start before A and B finish so itâ€™s a Finish to Start relationship. Info about the start of A and B is irrelevant for what the situation is asking for. RK ...
1 reply by Thomas Walenta
Jun 27, 2020 1:55 PM
Thomas Walenta
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Hi Rami,
it is a finish to start relationship between A and C as well B and C. Between A and B it is not, but that is the question. Thomas Interesting. Jun 27, 2020 1:35 PM
Replying to Rami Kaibni
...
ThomasI have to disagree. If C cannot finish before A and B finish then thatâ€™s a Finish to Finish relationship but the situation is C canâ€™t start before A and B finish so itâ€™s a Finish to Start relationship. Info about the start of A and B is irrelevant for what the situation is asking for. RK it is a finish to start relationship between A and C as well B and C. Between A and B it is not, but that is the question. Thomas Interesting. ...
1 reply by Rami Kaibni
Jun 27, 2020 2:22 PM
Rami Kaibni
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Thomas
I stand corrected, I totally missed that. For some reason I thought the question is asking about the relationship between C and (A/B). The relationship between A and B given the current situation is a Finish to Finish because that is the only answer that makes sense given the info about the start of C. However, the question is a bit vague. Thank you for correcting me. RK
Rami Kaibni, I also gave the same answer as you mentioned but PMI goes with Thomas.
Thomas, I am still not clear why Finish to Finish is the answer when no information of A and B relationship is given. B can finish after A or A can finish after B or Both can start or finish at the same time.
Hi Pooja,
well, there is information given about A and B, though indirectly (both are predecessors of C). If you bring this together and since there is no information about the starts of either A or B, the only thing you can conclude is about the finishing of A and B. It is not a perfect logical conclusion though. I did not succeed to find a f2f clause that describes their relationship without considering C. For example ' B has to finish when A finished plus 2 weeks' is not true. But with any question, the correct answer could be the only one that is not plain wrong. Thomas ...
1 reply by Pooja Sharma
Jun 28, 2020 6:58 AM
Pooja Sharma
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Thanks for your reply. Agree with your explanation.
Jun 27, 2020 1:55 PM
Replying to Thomas Walenta
...
Hi Rami,
it is a finish to start relationship between A and C as well B and C. Between A and B it is not, but that is the question. Thomas Interesting. I stand corrected, I totally missed that. For some reason I thought the question is asking about the relationship between C and (A/B). The relationship between A and B given the current situation is a Finish to Finish because that is the only answer that makes sense given the info about the start of C. However, the question is a bit vague. Thank you for correcting me. RK Jun 27, 2020 2:19 PM
Replying to Thomas Walenta
...
Hi Pooja, well, there is information given about A and B, though indirectly (both are predecessors of C). If you bring this together and since there is no information about the starts of either A or B, the only thing you can conclude is about the finishing of A and B. It is not a perfect logical conclusion though. I did not succeed to find a f2f clause that describes their relationship without considering C. For example ' B has to finish when A finished plus 2 weeks' is not true. But with any question, the correct answer could be the only one that is not plain wrong. Thomas 
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