Multiple Choice Questions on The average of 15 numbers is 15 If the average of first five numbers is 14 and that of other 9 numbe........... for RAS Exam Preparation

Back to Main Page

Multiple Choice Questions

The average of 15 numbers is 15 If the average of first five numbers is 14 and that of other 9 numbe...........

Quantitative Aptitude (RAS) Average
    Sign in with Google
    Download Solution PDF

    The average of 15 numbers is 15. If the average of first five numbers is 14 and that of other 9 numbers is 16, then find the middle number.

    15

    Incorrect Answer

    13

    Incorrect Answer

    11

    Correct Answer

    9

    Incorrect Answer
    Explanation:

    Average of 15 numbers = 15, Average of 5 numbers = 14, Average of 9 numbers = 16

    Average = Total Numbers
    No. of Numbers
    15 = Total Numbers/
            15


    Therefore, total numbers = 15 x 15 = 225
    Middle number = (Total numbers) – [(Average of 5 num x no of num) + ( Average of 9 num x no of num)]
    = (225) – [(14 x 5) + (16 x 9)]
    = (225) – [214] = 11

    Hence, option 3 is the correct answer.

    Please Wait..

    Let's Discuss

    Please Wait..
    Please wait..

    Please Wait..

    What our students have to say
    Download Abhipedia Android App

    Access to prime resources

    Downlod from playstore
    download android app download android app for free

    Search on abhipedia