New Enroll in RBI Grade B New Batch - Starts on May 21

    Question

    A man rows to a place 48 km distant and comes back in 14

    hours. He finds that he can row 4 km with the stream at the same time as 3 km against the stream. The speed of the stream is.
    A 3km/h Correct Answer Incorrect Answer
    B 1km/h Correct Answer Incorrect Answer
    C 2km/h Correct Answer Incorrect Answer
    D 5km/h Correct Answer Incorrect Answer

    Solution

    Let the speed of boat in still water =B and speed of stream =S then Speed of boat in downstream=B+S and distance =4km So now -time =4/B+S Speed of boat upstream =B-S and Distance =3km So, time = 3/B-S ATQ- S= 1 km/h

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