Critical Path
Logical Reasoning

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Common Information

Ajay would do five tasks: A, B, C, D and E; starting at 9 am in the morning. A is the first task and takes two hours. B can be done after A is complete and requires 1 hour. Work on C which would take 1 hour can start only after A and B are complete. Ajay can do task D along with B and C and would take 3 hours for that. Activity E with duration of 1 hour can start on completion of A, B, C and D.


Common Information Question: 3/3

What is the earliest time when Ajay can complete all tasks?


4 pm


3 pm


2 pm


1 pm

 Hide Ans

Option(B) is correct

Ajay starts at 9 am. He has to complete A before starting with B and complete B before starting with C. Also he can do D along with B and C. Moreover, he can start working on E only after A, B, C and D are over.

He completes A at 11 am as A takes 2 hours to finish.

Now, D takes 3 hrs to finish and can be completed with B and C which together take 3 hrs to complete.

∴ E can start at 2 and finishes at 3

Hence, option B is the correct choice.

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