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

    Question

    The aeroplane flies along a Square field @ 100, 200, 300

    and 400 km/hours respectively. Then find the Average speed of the aeroplane during the whole journey?
    A 125 kmph Correct Answer Incorrect Answer
    B 150 kmph Correct Answer Incorrect Answer
    C 96 kmph Correct Answer Incorrect Answer
    D 192 kmph Correct Answer Incorrect Answer

    Solution

    Concept of Average Speed: Let Side of a square = L.C.M of 100, 200, 300 and 400 = 1200 Now, Average Speed = (1200× 4)÷ ( 1200/100+1200/200+1200/300+1200/400) = (1200× 4)÷ 25 = 192 kmph

    Practice Next

    Relevant for Exams: