Quant Exam  >  Quant Questions  >  Read the passage befow and solve the question... Start Learning for Free
Read the passage befow and solve the questions based on it.
The average age of the students in a class is 35 years
Q.
If a student whose age was 25 is absent from the class, the average of those present goes up by 1. How many students were there in the class originally?
  • a)
    9
  • b)
    10
  • c)
    11
  • d)
    12
Correct answer is option 'C'. Can you explain this answer?
Verified Answer
Read the passage befow and solve the questions based on it.The average...
View all questions of this test
Most Upvoted Answer
Read the passage befow and solve the questions based on it.The average...
Solution:

Let's assume that there were originally 'n' students in the class.

Step 1: Understanding the given information
- The average age of the students in the class is 35 years.
- This means that the sum of the ages of all the students is 35 times the number of students, which can be written as 35n.

Step 2: Analyzing the impact of the absent student
- If a student whose age was 25 is absent from the class, the average of those present goes up by 1.
- This means that the new average age of the students present in the class is 36 years.

Step 3: Calculating the sum of the ages of the students present
- Since the new average age is 36 and there are 'n-1' students present, the sum of their ages can be calculated as 36 times 'n-1', which can be written as 36(n-1).

Step 4: Forming the equation
- According to the information given, the sum of the ages of the students present is equal to the sum of the ages of all the students minus the age of the absent student.
- So, we can form the equation as: 36(n-1) = 35n - 25.

Step 5: Solving the equation
- Let's solve the equation to find the value of 'n'.

36(n-1) = 35n - 25
36n - 36 = 35n - 25
n = 36 - 25
n = 11

Therefore, the original number of students in the class was 11.

So, the correct answer is option C) 11.
Explore Courses for Quant exam
Read the passage befow and solve the questions based on it.The average age of the students in a class is 35 yearsQ.If a student whose age was 25 is absent from the class, the average of those present goes up by 1. How many students were there in the class originally?a)9b)10c)11d)12Correct answer is option 'C'. Can you explain this answer?
Question Description
Read the passage befow and solve the questions based on it.The average age of the students in a class is 35 yearsQ.If a student whose age was 25 is absent from the class, the average of those present goes up by 1. How many students were there in the class originally?a)9b)10c)11d)12Correct answer is option 'C'. Can you explain this answer? for Quant 2024 is part of Quant preparation. The Question and answers have been prepared according to the Quant exam syllabus. Information about Read the passage befow and solve the questions based on it.The average age of the students in a class is 35 yearsQ.If a student whose age was 25 is absent from the class, the average of those present goes up by 1. How many students were there in the class originally?a)9b)10c)11d)12Correct answer is option 'C'. Can you explain this answer? covers all topics & solutions for Quant 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Read the passage befow and solve the questions based on it.The average age of the students in a class is 35 yearsQ.If a student whose age was 25 is absent from the class, the average of those present goes up by 1. How many students were there in the class originally?a)9b)10c)11d)12Correct answer is option 'C'. Can you explain this answer?.
Solutions for Read the passage befow and solve the questions based on it.The average age of the students in a class is 35 yearsQ.If a student whose age was 25 is absent from the class, the average of those present goes up by 1. How many students were there in the class originally?a)9b)10c)11d)12Correct answer is option 'C'. Can you explain this answer? in English & in Hindi are available as part of our courses for Quant. Download more important topics, notes, lectures and mock test series for Quant Exam by signing up for free.
Here you can find the meaning of Read the passage befow and solve the questions based on it.The average age of the students in a class is 35 yearsQ.If a student whose age was 25 is absent from the class, the average of those present goes up by 1. How many students were there in the class originally?a)9b)10c)11d)12Correct answer is option 'C'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of Read the passage befow and solve the questions based on it.The average age of the students in a class is 35 yearsQ.If a student whose age was 25 is absent from the class, the average of those present goes up by 1. How many students were there in the class originally?a)9b)10c)11d)12Correct answer is option 'C'. Can you explain this answer?, a detailed solution for Read the passage befow and solve the questions based on it.The average age of the students in a class is 35 yearsQ.If a student whose age was 25 is absent from the class, the average of those present goes up by 1. How many students were there in the class originally?a)9b)10c)11d)12Correct answer is option 'C'. Can you explain this answer? has been provided alongside types of Read the passage befow and solve the questions based on it.The average age of the students in a class is 35 yearsQ.If a student whose age was 25 is absent from the class, the average of those present goes up by 1. How many students were there in the class originally?a)9b)10c)11d)12Correct answer is option 'C'. Can you explain this answer? theory, EduRev gives you an ample number of questions to practice Read the passage befow and solve the questions based on it.The average age of the students in a class is 35 yearsQ.If a student whose age was 25 is absent from the class, the average of those present goes up by 1. How many students were there in the class originally?a)9b)10c)11d)12Correct answer is option 'C'. Can you explain this answer? tests, examples and also practice Quant tests.
Explore Courses for Quant exam
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
10M+ students study on EduRev