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    Question

    A train passes two people who are walking in the

    opposite direction of the train at the rates of 4 m/s and 10 m/sec in 12 seconds and 10 seconds respectively. What is the speed of the train?
    A 20m/s Correct Answer Incorrect Answer
    B 26m/s Correct Answer Incorrect Answer
    C 24m/s Correct Answer Incorrect Answer
    D 28m/s Correct Answer Incorrect Answer

    Solution

    Speed of persons =4m/s and 10m/s. Time =12 sec and 8 sec. Let the Speed of the train =x ATQ- D /(4+x) =12                … (1) D/(10+x) =10               … (2) 48+12x =100+10x 2x =52 X =26m/s.

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