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Q1. | Two trains 200 m and 150 m long are running on parallel rails at the rate of 40 kmph and 45 lunph respectively. In how much time will they cross each other, if they are running in the same direction ? |

A. | 72 sec [Wrong Answer] |

B. | 132 sec [Wrong Answer] |

C. | 192 sec [Wrong Answer] |

D. | 252 sec [Correct Answer] |

View Answer
Explanation:-
Answer : DDiscuss it below :Relative speed = (45 - 40) kmph = 5 kmph_{= 5 X} ^{ 5 }_{m/sec }^{18}
_{= } ^{ 25 }_{m/sec }^{18}
Total distance covered = Sum of lengths of trains = 350 m. _{Time taken = 350 X } ^{ 18 }_{sec = 252 sec.}^{25}
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