Multiple Choice Questions on A train travelling with 54 km hr takes 20 second to cross a bridge Another train 70 meter shorter cr........... for Mathematics - All Exams Preparation

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Multiple Choice Questions

A train travelling with 54 km hr takes 20 second to cross a bridge Another train 70 meter shorter cr...........

Quantitative Aptitude ( CCS) Problems on trains
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    A train travelling with 54 km/hr takes 20 second to cross a bridge. Another train 70 meter shorter crosses the same bridge at 36 km/hr. Find the time taken by the second train to cross the bridge?

    23 sec

    Correct Answer

    24 sec

    Incorrect Answer

    25 sec

    Incorrect Answer

    26 sec

    Incorrect Answer
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    Explanation:

    Let L and B are length of train and bridge respectively.
    L + B = 54*5/18*20 = 300 meter
    L + B – 70 = 36*5/18*t = 230, se we get t  = 23 sec

    By: Sandeep Dubey
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