RRB NTPC Prelims Model Paper 5 with solutions

Question : 19 of 100

Marks: +1, -0

A train 110 metres long passes a telegraph pole in 3 seconds. How long it will take to cross a railway platform 165 metres long ?

Solution:

(4) Speed of train

={110m}/{3sec}=110/3m/sec

time taken to pass the 165m long platform

={(110+ 165)m}/{110 /3m/sec}

={275 ×3}/110 sec. = 71/2 second

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