Multiple Choice Questions on A person covers 1 3rd of the total distance at 20 kmph and rest at 40 kmph If it takes 16 hours in a........... for CDS Exam Preparation

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Multiple Choice Questions

A person covers 1 3rd of the total distance at 20 kmph and rest at 40 kmph If it takes 16 hours in a...........

Quantitative Aptitude (CDS) Time & distance
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    A person covers 1/3rd of the total distance at 20 kmph and rest at 40 kmph. If it takes 16 hours in all. Find the total distance ans also find the average speed (respectively) of the entire journey?

     

    450km, 20kmph
     

    Incorrect Answer

    480km, 30kmph
     

    Correct Answer

    400km, 50kmph
     

    Incorrect Answer

    350km, 35kmph

    Incorrect Answer
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    Explanation:

    Let the total distance be x. Then,
    x/3×20 + 2x/3×4= = 16
    x/60 + x/60 = 16
    x = 8×60 
    x = 480km.
     Average speed  = 480/16 = 30 kmph

    By: bhavesh kumar singh
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