Time management Question

 An activity has an early start of day 3, early finish of day 9 and late start of day 13 and late finish of day 19. what is the duration of the activity?

1. 3

2. 6

3. 7

4. 10

Need clarification on the answer. Thanks in advance

Regards,

Riyaz

 Activity Duration = EF -ES + 1 or LF- LS + 1

AD=9-3+1=7

or 

AD=19-13+1=7

 

and Pmbok the first day is 0th day then shouldn't it be 6 ?

I  was wondering that there's some thing that i'm missing in the Q?

Kindly clarify..

see below one

I think 6 we dont add 1

 

Riyaz, you should refer old




Riyaz,


you should refer old posts, I have explained this question in ear;ier posts.


you can go to my blog http://er-sspawar.blogspot.in/2012/12/examples-of-network-start-with-0-and.html


then http://er-sspawar.blogspot.in/2012/12/pmi-says-pdm-start-with-zero.html


or for all posts - http://er-sspawar.blogspot.in


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you are asking many good questions, i could not reply on all.


but if you refer the old posts you will get old discussions. -- just put your query in search box.