An express train 120 m in length overtakes a pole in 12sec and another express train of length 10. m travelling in reverse direction in 10 sec. Find the speed of the second express train in km per hour.

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An express train 120 m in length overtakes a pole in 12sec and another express train of length 10. m travelling in reverse direction in 10 sec. Find the speed of the second express train in km per hour.