A thief is running away on a straight ro...

A thief is running away on a straight road in a moving with a speed of `9 ms^(-1)`. A policeman chases him on a motor cycle moving at a speed of `10 ms^(-1)`. If the instantaneous separation of the jeep from the motor cycle is `100 m`, how long will it take for the policeman to catch the thief ?.

1 second

19 second

90 second

100 second

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