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A train 100 meters long moving at a speed of 40 km/hr crosses a train 130 meters long coming from the opposite direction in 6 seconds. Find the speed of the second train? |

A) 98 km/hr B) 96 km/hr C) 94 km/hr D) 90 km/hr Correct Answer : 98 km/hr Explanation :Time taken to cross= 6 sec = 6/3600 sec = 1/600 hr Time taken to cross= Distance covered/Relative speed |

A train takes 8 sec to cross a 75 metre long platform at a speed of 90 km/h. What is the length of the train? |

A) 125 metre
B) 150 metre
C) 75 metre
D) 100 metre
Correct Answer : 125 metre Explanation :Let the length of the train be X. Speed = 90 km/hr Distance = Speed * Time Hence, the length of the train is 125 m. |

A 300 meter long metro train crosses a platform in a metro station in 39 seconds while it crosses a lamp post in 18 seconds. What is the length of the platform? |

A) 250 meter
B) 350 meter
C) 520 meter
D) 300 meter
Correct Answer : 350 meter Explanation :Let, Time taken to cross the platform = 39 sec Time taken to cross a post = 18 sec Put this value of S in eq(1) we get Length of Platform, P = 350 m |