Question

Two trains, A and B, are moving towards each other. Train Ais 150 meters long and is running at a speed of 300 m/s, Train Bis 110 meters long and is running at a
speed of 180 m/s. How much time would the longer train take to cross the shorter one?
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75 seconds
60 seconds
55 seconds
65 seconds
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Answer 1

Given : Two trains, A and B, are moving towards each other. Train Ais 150 meters long and is running at a speed of 300 m/s, Train Bis 110 meters long and is running at a  speed of 180 m/s.  

To find : How much time would the longer train take to cross the shorter one?

Solution:

Total Distance to be covered = Length of both trains

= 150 + 110

= 260 m

Both Trains are running towards each other hence relative speed

= Speed of both trains

= 300 + 180

= 480 m/s

Time = Distance//Speed

=> Time = 260/480

=> Times =  0.54 sec

None of the given option are correct

Time taken by  longer train take to cross the shorter one is 0.54 sec

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