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A train moving at 15 m/sec takes 20 seco...

A train moving at 15 m/sec takes 20 seconds to pass a cyclist moving in the same direction as that of the train. How much time will be train need to pass the cyclist, if the cyclist moves in a direction opposite to that of the train and if the speed of the cyclist is 5m/sec and the length of the cycle is 1 m? `9. 95\ s e c` b. `10\ s e c` c. `10. 05\ s e c` d. `12\ s e c`

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