Quant Exam  >  Quant Questions  >  In a class average age of 24 boys and their t... Start Learning for Free
In a class average age of 24 boys and their teachers is 15 years. When the teacher's age is excluded the average age decreases by one year. The age of teacher is?
  • a)
     40
  • b)
    39            
  • c)
    38          
  • d)
    41
Correct answer is option 'B'. Can you explain this answer?
Verified Answer
In a class average age of 24 boys and their teachers is 15 years. When...
Sum of the ages of 24 boys and 1 teacher = (15 x 25) years = 375 years.
Sum of the ages of 24 boys = (24 x 14) years = 336 years.
Age of the teacher = (375 − 336) years = 39 years.
View all questions of this test
Most Upvoted Answer
In a class average age of 24 boys and their teachers is 15 years. When...
Sum of the ages of 24 boys and 1 teacher = (15 x 25) years = 375 years.
Sum of the ages of 24 boys = (24 x 14) years = 336 years.
Age of the teacher = (375 − 336) years = 39 years.
Free Test
Community Answer
In a class average age of 24 boys and their teachers is 15 years. When...
Given information:
- Class has 24 boys and their teacher
- Average age of 24 boys and their teacher is 15 years
- Average age decreases by one year when teacher's age is excluded

To find:
- Age of teacher

Solution:
Let the age of teacher be x
Total age of 24 boys and teacher = 24*15 = 360 (as the average age is 15)
Total age of 24 boys = 360 - x (as the teacher's age is x)
Average age of 24 boys = (360 - x)/24

As per the given information, when the teacher's age is excluded, the average age decreases by one year. This means that the new average age of 24 boys is 14 years.

So, (360 - x)/24 - x/1 = 14
Simplifying the above equation, we get x = 39

Therefore, the age of the teacher is 39 years.

Answer: Option B (39)
Explore Courses for Quant exam
In a class average age of 24 boys and their teachers is 15 years. When the teacher's age is excluded the average age decreases by one year. The age of teacher is?a)40b)39c)38d)41Correct answer is option 'B'. Can you explain this answer?
Question Description
In a class average age of 24 boys and their teachers is 15 years. When the teacher's age is excluded the average age decreases by one year. The age of teacher is?a)40b)39c)38d)41Correct answer is option 'B'. 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 In a class average age of 24 boys and their teachers is 15 years. When the teacher's age is excluded the average age decreases by one year. The age of teacher is?a)40b)39c)38d)41Correct answer is option 'B'. Can you explain this answer? covers all topics & solutions for Quant 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for In a class average age of 24 boys and their teachers is 15 years. When the teacher's age is excluded the average age decreases by one year. The age of teacher is?a)40b)39c)38d)41Correct answer is option 'B'. Can you explain this answer?.
Solutions for In a class average age of 24 boys and their teachers is 15 years. When the teacher's age is excluded the average age decreases by one year. The age of teacher is?a)40b)39c)38d)41Correct answer is option 'B'. 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 In a class average age of 24 boys and their teachers is 15 years. When the teacher's age is excluded the average age decreases by one year. The age of teacher is?a)40b)39c)38d)41Correct answer is option 'B'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of In a class average age of 24 boys and their teachers is 15 years. When the teacher's age is excluded the average age decreases by one year. The age of teacher is?a)40b)39c)38d)41Correct answer is option 'B'. Can you explain this answer?, a detailed solution for In a class average age of 24 boys and their teachers is 15 years. When the teacher's age is excluded the average age decreases by one year. The age of teacher is?a)40b)39c)38d)41Correct answer is option 'B'. Can you explain this answer? has been provided alongside types of In a class average age of 24 boys and their teachers is 15 years. When the teacher's age is excluded the average age decreases by one year. The age of teacher is?a)40b)39c)38d)41Correct answer is option 'B'. Can you explain this answer? theory, EduRev gives you an ample number of questions to practice In a class average age of 24 boys and their teachers is 15 years. When the teacher's age is excluded the average age decreases by one year. The age of teacher is?a)40b)39c)38d)41Correct answer is option 'B'. 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