Question

    A man can row at 6 kmph in still water. If the velocity

    of current is 3 kmph and it takes him 8 hour to row to a place and come back, how far is the place?
    A 10 km Correct Answer Incorrect Answer
    B 14 km Correct Answer Incorrect Answer
    C 18 km Correct Answer Incorrect Answer
    D 16 km Correct Answer Incorrect Answer
    E 12 km Correct Answer Incorrect Answer

    Solution

    Let the distance be x km. Speed upstream = 6 – 3 = 3 kmph Speed downstream = 6 + 3 = 9 kmph => (x/9) + (x/3) = 8 => (x + 3x)/9 = 8 => 4x = 72 => x = 18 km

    Practice Next