General Aptitude Problems on Trains Question #2496
Single Choice Not Set

QTwo trains 105m and 90m long run at the speeds of 45 kmph and 72 kmph respectively in opposite direction on parallel tracks. The time which they take to cross each other is

ID: #2496 Problems on Trains 1,020 views
Question Info
#2496Q ID
Not SetDifficulty
Problems on TrainsTopic

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  • A 5 sec
  • B 6 sec
  • C 7 sec
  • D 8 sec
Correct Answer

Explanation

Sum of the lengths of the trains = (105 + 90)m = 195m 

 
Relative speed = (72 +45)kmph 
 
= 117kmph =(117 x 5/18)m/sec = 585/18 m/sec 
 
Required Time = (195 x 18/585)sec = 6 Sec

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