Question : 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
Answer : option (A)
Solution :
