Priti posted an Question
June 09, 2021 • 19:21 pm 30 points
  • CSIR NET
  • Mathematical Sciences

Example 18 : 10 years ago the average age of all the 25 teachers of the girls college was 45 years. 4 years ago the principal has retired from her post at the a

Example 18 : 10 years ago the average age of all the 25 teachers of the Girls college was 45 years. 4 years ago the principal has retired from her post at the age of 60 year. So after one year a new principal whose age was 54 years recruited from outside. The present average age of all the teachers is, if principal is also considered as a teacher 18 (A) 5425 years (B) 5525 years (C) 49 years (D) None of these

1 Answer(s) Answer Now
  • 1 Likes
  • 2 Comments
  • 0 Shares
  • Avijeet banerjee best-answer

    option (A) is correct. explanation is given in the attachment.

    cropped800720324636472941.jpg
    eduncle-logo-app

    how the ages of principals 66 and 59

    eduncle-logo-app

    present age of old principal is 66 since 6 years ago he retired from his job at the age of 60 .and new principal joined 5 years ago at the age of 54.

    eduncle-logo-app

    After the retirement of old principal 1 year later new principal joined at the age of 54.

    eduncle-logo-app

    ok

whatsapp-btn

Do You Want Better RANK in Your Exam?

Start Your Preparations with Eduncle’s FREE Study Material

  • Updated Syllabus, Paper Pattern & Full Exam Details
  • Sample Theory of Most Important Topic
  • Model Test Paper with Detailed Solutions
  • Last 5 Years Question Papers & Answers