shortest amount of time

Submitted by san on Wed, 04/24/2013 - 04:37

 

You have a project with four tasks as follows: Task 1 can start immediately and has an estimated duration of one. Task 2 can start after task 1 is completed and has an estimated duration of four. Task 3 can start after Task 2 is completed and has an estimated duration of five. Task 4 can start after Task 1 is completed and must be completed when Task 3 is completed. The estimate for Task 4 is ten. What is the shortest amount of time in which the project can be completed?
Answers :  
 A)10.0
 B)9.0
 C)18.0
 D)11.0

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sspawar

Wed, 04/24/2013 - 07:41

 11

ssundar

Wed, 04/24/2013 - 08:07

 how did you calculate pawar?

sspawar

Wed, 04/24/2013 - 08:19

 


     

1

5

5

10

    
       

2/4DAYS

> 

3/5DAYS

 

  

0

1

  

> 

  

> 

  
 

1/1DAY

 

 

      

 

  
 

> 

1

11

    

 

FF+1
     

> 

4/10DAYS

 

 

 

  
       

< 

      

 

san

Wed, 04/24/2013 - 11:13

As per this , shortest duration could be 10 (1+4+5) =10 (task 1-2-3)

task 1-4 = 1+10 =11

Since question is about shortest duration I opted for 10. Please correct me if my understanding is wrong in analysing this question.

 

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crushPMP

Wed, 04/24/2013 - 13:52

 D. 11 is the shortest, as Task 4 has a FF dependency with Task 3

sspawar

Wed, 04/24/2013 - 14:12

 question is asking

what is the shortest amount of time in which the project can be completed?

it is not asking what is shortest duration path.