The speed of a boat in still water is (27/4) km/hr. The time required to travel a certain distance upstream is five times than that of downstream for the same distance. Find the speed of the stream?

1:

3.5 km/hr

2:

7.6 km/hr

3:

5.8 km/hr

4:

4.5 km/hr.

5:

2.8 km/hr

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IBPS RRB PO Prelims 2017

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