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Two trains are moving with equal speed i...

Two trains are moving with equal speed in opposite directions along two parallel railway tracks. If the wind is blowing with speed `u` along the track so that the relative velocities of the trains with respect to the wind are in the ratio `1:2,` then the speed of each train must be

A

3u

B

2u

C

5u

D

4u

Text Solution

Verified by Experts

The correct Answer is:
A
Let speed of train = x
`(x - u)/(x+u) = 1/2 rArr x + u = 2x - 2u`
`rArr x = 3u`
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