RRB NTPC 2014 Paper

Question : 13 of 100

Marks: +1, -0

A train passes a 100 m long platform in 25 seconds. If it is travelling at a speed of 54 km/hour, then what is the length of the train?

Solution:

(1) Let the length of the train be lm.
Speed of the train = 54 ×

5/18

m/s
Now,

\l + 100 /15

= 25
⇒l = 375 - 100 = 275 m

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