Multiple Choice Questions on A train running with 72km hr takes 20sec to cross a platform 200 m long How much it takes to c........... for CAPF (AC) Exam Preparation

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Multiple Choice Questions

A train running with 72km hr takes 20sec to cross a platform 200 m long How much it takes to c...........

Quantitative Aptitude( Paper-I ) Problems on trains
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     A train running with 72km/hr takes 20sec to cross a platform 200 m long. How much it takes to cross a stationary train having twice the length of platform.

    20 sec

    Incorrect Answer

    30 sec

    Correct Answer

    40 sec

    Incorrect Answer

    50 sec

    Incorrect Answer
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    Explanation:

    200+L = 72*(5/18)*20. L= 200m.

    400 + 200 = 72*(5/18)*t. So, t = 30sec

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