Multiple Choice Questions on How many seconds will a train 50 m in length travelling at the rate of 42 km an hour rate to pass an........... for Mathematics - All Exams Preparation

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Multiple Choice Questions

How many seconds will a train 50 m in length travelling at the rate of 42 km an hour rate to pass an...........

Quantitative Aptitude ( CCS) Problems on trains
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    How many seconds will a train 50 m in length, travelling at the rate of 42 km an hour, rate to pass another train 80 m long, proceeding in the same direction at the rate of 30 km an hour?

    45sec

    Incorrect Answer

    39sec

    Correct Answer

    50sec

    Incorrect Answer

    55sec

    Incorrect Answer
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    Explanation:

    Solution: 
    Relative speed =42-30=12km/hr
    Time= (50+80)*18/12*5
    =130*18/12*5==>13*3
    =39sec.

    By: Pranav Gupta
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