SSC CGL 16 Aug 2015 Shift 1 Paper

Question : 141 of 200

Marks: +1, -0

A train 180 metres long is running at a speed of 90 km/h. How long will it take to pass a post ?

Solution:

Speed of train
= 90 kmph
=

(90×5/{18})

m/s
25 m/sec.
When a train crosses a post, it covers a distance equal to its own length.
∴ Required time =

{\Distance}/{\Speed}

{180}/{25}

= 7.2 seconds

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