Logical Reasoning Discussion

**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.

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

✖ A. |
4 pm |

✔ B. |
3 pm |

✖ C. |
2 pm |

✖ D. |
1 pm |

**Solution:**

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.