Comprehension Passage
Directions: The speed of a boat in still water is 90 km/h. to catch a thief a man started rowing the boat in the river. He saw the thief 200m ahead of him and going in the opposite direction of the stream with the speed of stream.
If the boat is moving against the direction of the stream and the man needs to reach the thief in 20 seconds or less than 20 sec else he will reach the other end and run. For which of the following stream speed, the thief will never be caught(The upstream speed of the thief is equal to the speed of the stream)?
1
6 m/sec
2
12 m/sec
3
8 m/sec
4
10 m/sec
5
More than one of the above