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

    Question

    TYPE 36

    In a classroom there are 16 boys and 13 girls. Average

    age of each boy and each girl is 20 years and 15 years respectively. The sum of ages of all the boys, girls and a teacher whose age is ‘x’ years is 550 years. Find the value of ‘x’.
    A 31 Correct Answer Incorrect Answer
    B 34 Correct Answer Incorrect Answer
    C 35 Correct Answer Incorrect Answer
    D 47 Correct Answer Incorrect Answer
    E 40 Correct Answer Incorrect Answer

    Solution

    Sum of ages of all boys = 16 x 20 = 320 Sum of ages of all girls = 13 x 15 = 195 So, 320 + 195 + x = 550 => x = 35

    Practice Next