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

[alijan kk]

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?

 

[PeroK]

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.