Question

145. A train of length 270 metres crosses a telegraph post in 18 seconds. The speed
(d) 30%
of the train is
(a) 35 km/h (b) 41 km/h (c) 45 km/h (d) 54 km/h

Answer 1

Answer: Option d

Step-by-step explanation:

1kmph=(5/18)m/sec

so, speed=270/18=15m/sec

=15x18/5=54kmph