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

    Question

    The average of three numbers is 63. The first number is

    twice the second number and is half of the third. Then find the 12.5% of the difference of first and third number.
    A 6.75 Correct Answer Incorrect Answer
    B 6.75 Correct Answer Incorrect Answer
    C 6.75 Correct Answer Incorrect Answer
    D 6.75 Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    Let the number be a, b and c respectively. ATQ, a = 2b and a = z/2 a + b + c = 63 x 3 = 189 a + a/2 + 2a = 189 7a/2 = 189 a = 54 b = 54/2 = 27 c = 108 Required answer = 12.5% of (108 – 54) = 12.5% x 54 = 6.75

    Practice Next

    Relevant for Exams: