Multiple Choice Questions on Gopal covers 100 km He travels at a speed of 60 kmph for the first 40 km and the rest of the distanc........... for RRB(NTPC) Exam Preparation

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Multiple Choice Questions

Gopal covers 100 km He travels at a speed of 60 kmph for the first 40 km and the rest of the distanc...........

Quantitative Aptitude (RRB NTPC) Time & distance
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    Gopal covers 100 km. He travels at a speed of 60 kmph for the first 40 km and the rest of the distance at 40 kmph. What is his average speed in kmph?

    44.20 

    Incorrect Answer

    45.20

    Incorrect Answer

    46.15 

    Correct Answer

    47.20

    Incorrect Answer
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    Explanation:

    Average speed = (100/(40/50)+(60/40)
    =24000/520=46.15kmph

    By: Barka Mirza
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