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Q1. | A train moves past a telegraph post and a bridge 264 m long in 8 seconds and 20 seconds respectively. What is the speed of the train ? |

A. | 69.5 km/hr [Wrong Answer] |

B. | 70 km/hr [Wrong Answer] |

C. | 79 km/hr [Wrong Answer] |

D. | 79.2 km/hr [Correct Answer] |

View Answer
Explanation:-
Answer : DDiscuss it below :Let the length of the train be x metres and its speed by y m/sec._{They,} ^{ X }_{ = 8 <=> x = 8y}^{y}
_{Now,} ^{x + 264}_{ = y <=> 8y + 264 = 20y <=> y = 22.}^{20}
_{Speed = 22m/sec = 22 X} ^{18}_{ km/hr = 79.2 km/hr.}^{5}
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