A train of length 384 metres crosses an electric pole in 12 seconds and crosses another train of the same length travelling in opposite direction in 12 seconds. What is the speed of the second train?

Correct option is D

Given:
Length of the train = 384 m
Time = 12 seconds
Formula Used:
Speed = Distance / Time
Solution:
The speed of the first train is 384/12 = 32 m/s.
Let the speed of the second train = x m/s
Relative speed = x + 32
Total length of the train = 384 + 384 = 768
Time = 768/(x +32)
12 = 768/(x +32)
(x +32) = 64
x = 32 m/s