Problems on Trains - Data Intensity 1 :: Discussion


22.Two trains are running at 40 km/hr and 20 km/hr respectively in the same direction. Fast train completely passes a man sitting in the slower train in 5 seconds. What is the length of the fast train?
A.23 m
B.23⁡〖2/9〗
C.27⁡〖7/9〗
D.29 m
Answer:  Option  C
Explanation:

Relative speed = (40 - 20) km/hr = ( 20 x 5 ( m/sec = ( 50 ( m/sec.
18 9
Therefore Length of faster train = ( 50 x 5 ( m = 250 m = 27 7 m.
9 9 9

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Published by:Michael Daani

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