General Aptitude › Problems on Trains › Question #2519
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QA train 700 m long is running at the speed of 72km per hour if it crosses a tunnel in 1 minute. Then the length of the tunnel is:

ID: #2519 Problems on Trains 1,384 views
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#2519Q ID
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Problems on TrainsTopic
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  • A 500m ✔ ✖
  • B 550m ✔ ✖
  • C 600m ✔ ✖
  • D 700m ✔ ✖
Correct Answer

Explanation

Speed = (72 × 5/18 ) m/sec = 20 m/sec 

 
Length of tunnel = x meters 
 
(700+x)/60 = 20 
 
=> 700 + x = 1200 or x = 500 m
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