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A train B speeding with 120 kmph cros...

A train B speeding with 120 kmph crosses another train C running in the same direction, in 2 minutes. If the lengths of the trains B and C be 100 m and 200 m respectively, what is the speed (in kmph) of the train C? `111\ k m` b. `123\ k m` c.`127\ k m` d. `129\ k m`

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