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Abhishek Shah

· started a discussion

· 1 Months ago

It is written that he croses now how can you include train's lenght?????

Question:

A passenger sitting in a train of length 520 m, which is running at a speed of 80 km/h crossing two platforms. He notices that he crosses the first platform and second platform in time interval which are in the ratio of 8 : 5 respectively. If the length of first platform is 1040 m. Then the length of second platform is –

Options:
A)

450 m

B)

650 m

C)

455 m

D)

545 m

Solution:

Ans: (b)

  

manjeet

· commented

· 1 Months ago

dear knowledge expert...
we cannot include trains length in any cases,bcz here it is mention that "he crosses the platform"
plz check once again ans will be 650..

Knowledge Expert

· commented

· 1 Months ago

Dear Student
when the train is about to cross the first station its length will be included. But after it has crossed the first station it is already inside the domain of the next station. Hence, we have to exclude the trains length of 520m from 975m and so the final answer would be 975-520=455m.
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