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

    Question

    A man can swim at the rate of 7 km/hr in still water. If

    the speed of the water is 4 km/hr, then the time taken by him to swim 15 km upstream is
    A 4 hr Correct Answer Incorrect Answer
    B 7 hr Correct Answer Incorrect Answer
    C 8 hr Correct Answer Incorrect Answer
    D 5 hr Correct Answer Incorrect Answer
    E 6 hr Correct Answer Incorrect Answer

    Solution

    Rate upstream = 7 – 4 = 3 km/hr Distance upstream = 15 km Hence, required time = distance/speed = 15/3 = 5 hours

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