NIACL Model Paper 8 with solutions for free online practice

Question : 51 of 100

Marks: +1, -0

A train running at the speed of 108 kmph, crosses a 365 metre long platform in 21 seconds. What is the length of the train ?

Solution:

(3) Speed of train =108 kmph

= [108×5/18]

m/second
= 30 m/second
If the length of train be x metre, then Speed of train

=\text"Length of train and platform"/\text"Time taken"

⇒

30 ={x+365}/21

⇒

30×21=x+365

⇒

630 = x + 365

x= 630 - 365 = 265

metre

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