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7th Class Mental Ability Calendar Question Bank Time Clock and Calendar

  • question_answer
    A 260 metres long train runs at a speed of 55 km / h. How much time will it take to cross a platform to 90 metres long?

    A) 30 seconds       

    B) 36 seconds

    C) 33 seconds        

    D) 40 seconds

    E)   None of these    

    Correct Answer: B

    Solution :

    Explanation                                                                        Option [b] is correct. Total length to be covered by the train \[= 260 + 290 = 550metres.\] Time taken to cross-platform \[=\,\,\frac{550}{55}\times \frac{3600}{1000}\,\,=\,\,36\,\,\operatorname{seconds}\]


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