New RBI Grade B 2025 Notification will come Soon! Enroll Here

    Question

    A swimmer can swim at a speed of 3.5 kilometers per hour

    in still water. If the time taken to cover a certain distance upstream is 2.5 times the time taken to cover the same distance downstream, then find the velocity of the stream.
    A 7km/h Correct Answer Incorrect Answer
    B 2.5km/h Correct Answer Incorrect Answer
    C 3km/h Correct Answer Incorrect Answer
    D 1.5km/h Correct Answer Incorrect Answer

    Solution

    Let the speed of boat in still water =B and speed of stream =S Distance =y Given -B=3.5km/h ATQ- 2(3.5+S) =5(3.5-S) 7+2S=17.5-5S 7S=10.5 S=10.5/7=1.5km/h

    Practice Next

    Relevant for Exams: