Just Crack Interview

Your Ultimate Interview Preparation Resource

The average mark of the students of a class in a particular exam is 80. If 5 students whose average mark in that exam is 40 are excluded, the average mark of the remaining will be 90. Find the number of students who wrote the exam?

The average mark of the students of a class in a particular exam is 80. If 5 students whose average mark in that exam is 40 are excluded, the average mark of the remaining will be 90. Find the number of students who wrote the exam?

Ques:- The average mark of the students of a class in a particular exam is 80. If 5 students whose average mark in that exam is 40 are excluded, the average mark of the remaining will be 90. Find the number of students who wrote the exam?
1 5834
Back to Previous Page

One Answer on this Question

  1. -Total /n=80
    – x/5=40
    x=200

    Total/n=y/n
    y-x/n-5=90
    80n-200=90(n-5)
    80n-200=90n-450
    450-200=10n
    n =25 (students) write exam

    Reply

Leave a Reply

Your email address will not be published. Required fields are marked *

Scroll to top