New Enroll in RBI Grade B New Batch - Starts on May 21

    Question

    If Pawan takes twice the time that Qureshi takes or three

    times the time that Raju takes to finish a task, and all three working together can complete it in two days, how much time will Qureshi need to complete the task alone?
    A 6 Correct Answer Incorrect Answer
    B 10 Correct Answer Incorrect Answer
    C 12 Correct Answer Incorrect Answer
    D 18 Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    ATQ;
    Let time taken by Pawan alone to finish the work = 6x

    Time taken by Qureshi alone to finish the work = 3x

    Time taken by Raju alone to finish the work = 2x

    Let total work = LCM of 6x, 3x, and 2x = 6x

    Part of work done by Pawan, Qureshi, and Raju alone in 1 day is 1 unit, 2 units, and 3 units respectively.

    Total time taken to finish the task by all the 3 persons together = 2

    6x/(1 + 2 + 3) = 2

    x = 2

    Time taken by Q alone to finish the work = 3x = 6 days

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