Two trains 121 m and 99 m in length are running in opposite directions with velocities 40 km h^−1 and 32 km h^−1. In what time they will completely cross each other ?

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Two trains 121 m and 99 m in length are running in opposite directions with velocities 40 km h^−1 and 32 km h^−1. In what time they will completely cross each other ?
16
Sep
Two trains 121 m and 99 m in length are running in opposite directions with velocities 40 km h^−1 and 32 km h^−1. In what time they will completely cross each other ? Two trains 121 m and 99 m in length are running in opposite directions with velocities 40 km h^−1 and 32 km [...]
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