Question

Two trains are running on parallel lines in the same direction at speeds of 40 kmph and 20 kmph
respectively. The faster train crosses a man in the second train in 36 seconds. The length of the
faster train is
(a) 200 metres
(C) 225 metres
(b) 185 metres
(d) 210 metres​

Answer 1

Answer:

A) 200 metres

Step-by-step explanation:

Firstly, Relative velocity of 1st train with respect to 2nd train=  (40-20) kmph

                                                                                                   =  20 kmph

Convert it in m/sec,

=  20 * (5/18) m/sec

=  5.5555 m/sec

now, time is 36 sec. So, multiply speed*Time to get the distance covered.

= 5.55*36 metres

= 199.99 metres

= 200 metres

Answer 2

Step-by-step explanation:

(A)200

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