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1 . A train 240 m long passed a pole in 24 seconds . How long will it take to pass a platform 650 m long ?

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Answer: Option B

Explanation:

Given:

Length of the train = 240 m

Time taken to cross the pole =24 s

Length of the platform = 650 m

Concept Used :

Time take into cross the platform = (length of train + length of the platform)/speed of the train

Speed of train = length of train/time taken

Calculation:

Speed of train = 240/24 = 10 m/s

Time taken to cross the platform = (240 + 650)/10 = 890/10
= 89 s

:The time taken to cross the platform is 89 s.

Assistant Director (General) 06.07.18