Activity duration question

Need answer to the question and logic pls. I have a feeling that the exam site has wrong answer to this question. Please explain the answer

 

 Activity A has a FF relationship with Activity B. Activity A has a duration of 7 days. Activity B has duration of 5 Days and 3 days lag. What is the total duration of Activity A and B?

 


     

A/7

     
     

> 

   
       

 


FF+3

 
       

 

   
     

B/5


< 

   
           
             

for pure FF relationship


Suppose both activities finished on 7th

             

for  FF +3 relationship


activity B will finish on 10th

 
             

thus total duration =


10 days

     

 See my blog july 28 at  er-sspawar.blogspot.in

Thanks Pawar. Do you have samples for FF and SF 

Hi Pawarji..


 


Related to  this, what does FF -n literally translates to, for example FF -3 in above case ?


Can such questions come in exam ?


 


Edit: got the explanation here


http://pmzilla.com/duration-calculation-pmp


 


Renji


 


 

I concur with SS Pawar...the durtaion is 10 days.


FF= Task B doesn't finish until Task A is completed.(finished)  So 'A' finishes on 7th day so 'B' also should finish on 7th day. Plus the lag of 3 days would add up to 10 days.


 


Regards


 


CN Patil