Multiple Choice Questions on A train takes 18 seconds to pass completely through a station 162 m long and 15 seconds throug........... for Mathematics - All Exams Preparation

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Multiple Choice Questions

A train takes 18 seconds to pass completely through a station 162 m long and 15 seconds throug...........

Quantitative Aptitude ( CCS) Time & distance
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     A train takes 18 seconds to pass completely through a station 162 m long and 15 seconds through another station 120 m long. The length of the train is ?

    70 m

    Incorrect Answer

    80 m

    Incorrect Answer

    90 m

    Correct Answer

    100 m

    Incorrect Answer
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    Explanation:

    Let length of train = L

    In first case, train covers 162 + L m in 18 seconds and in second case train covers 120 + L m in 15 seconds.

    Speeds are (162 + L)/18 and (120 + L)/15 respectively.

    But they are equal.

    => (162 + L)15 = (120 + L)18

    => 2430 - 2160 = 3L

    => L = 270/3 = 90 m

    Hence, option 3 is the correct answer.

    By: Amit Kumar
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