Is 7.5 Seconds the Correct Time for a Train to Cross a 165m Railway Platform?

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SUMMARY

The discussion revolves around calculating the time it takes for a 110-meter-long train to cross a 165-meter railway platform. The train's speed is determined by the formula: speed = distance/time, resulting in a speed of 36.67 m/s (110 m in 3 seconds). Using this speed, the time to cross the platform is calculated as 7.5 seconds, which is confirmed as the correct answer despite a conflicting note suggesting 8 seconds.

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Homework Statement


If a train 110 m long passes a telegraph pole in 3 seconds, then the time taken by it to cross a railway platform 165 m long is :

Homework Equations



The Attempt at a Solution


110 meters/3 seconds = speed of train

using this ratio

((110 m)/(3 seconds)) * (110m+165m)=7.5 seconds

the ans in my notes is 8 second , is it a possible answer?
 
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alijan kk said:

Homework Statement


If a train 110 m long passes a telegraph pole in 3 seconds, then the time taken by it to cross a railway platform 165 m long is :

Homework Equations



The Attempt at a Solution


110 meters/3 seconds = speed of train

using this ratio

((110 m)/(3 seconds)) * (110m+165m)=7.5 seconds

the ans in my notes is 8 second , is it a possible answer?

As before ##7.5s## is correct.
 
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