Multiple Choice Questions on A man walks at a speed of 3 kmph He doubles his speed after reaching exactly half way He walks for 5........... for RRB(NTPC) Exam Preparation

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Multiple Choice Questions

A man walks at a speed of 3 kmph He doubles his speed after reaching exactly half way He walks for 5...........

Quantitative Aptitude (RRB NTPC) Time & distance
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    A man walks at a speed of 3 kmph. He doubles his speed after reaching exactly half way. He walks for 5 hours in all. What is the total distance travelled by him?

    20km

    Correct Answer

    15 km

    Incorrect Answer

    12 km

    Incorrect Answer

    10 km

    Incorrect Answer
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    Explanation:

    Let total distance be 2D.
    He walks first D distance with 3kmph
    and the next D with 6kmph.
    D/3 + D/6 = 5
    D =10 , Total distance = 20

    By: Barka Mirza
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