Banking Exams Exam  >  Banking Exams Questions  >   In a class there is 39 students, the average... Start Learning for Free
In a class there is 39 students, the average weight decreases by 4 kg, when a new student is joining the class. If the average weight of students is 64 kg. What is the weight of new student?
  • a)
    90 kg
  • b)
    96 kg
  • c)
    110 kg
  • d)
    85 kg
  • e)
    None of these
Correct answer is option 'B'. Can you explain this answer?
Most Upvoted Answer
In a class there is 39 students, the average weight decreases by 4 kg...
Given
A total number of students = 39.
The average weight of students is 64 kg.
The average weight decreases by 4 kg.
Total weight of class = 39 × 64 kg = 2496 kg
Total weight after new students joins = (39 + 1)(64 - 4) = 2400 kg
The weight of new student = Total weight of class - Total weight after new students joins.
⇒ 2496 kg - 2400 kg
⇒ 96 kg
∴ The weight of new student is 96 kg.
Hence, the correct option is (B).
Free Test
Community Answer
In a class there is 39 students, the average weight decreases by 4 kg...

Given Information:
- Total number of students in the class = 39
- Average weight of students = 64 kg
- Decrease in average weight when a new student joins = 4 kg

Calculations:
Let the weight of the new student be x kg.

When the new student joins, the total weight of all students increases by x kg. This increase in total weight is equal to the decrease in the average weight of the class.

So, according to the given information:
39 * 64 + x = 40 * 60
2496 + x = 2560
x = 2560 - 2496
x = 64 kg

Conclusion:
Therefore, the weight of the new student joining the class is 64 kg, which corresponds to option B.
Explore Courses for Banking Exams exam

Similar Banking Exams Doubts

In a class there is 39 students, the average weight decreases by 4 kg, when a new student is joining the class. If the average weight of students is 64 kg. What is the weight of new student?a)90 kgb)96 kgc)110 kgd)85 kge)None of theseCorrect answer is option 'B'. Can you explain this answer?
Question Description
In a class there is 39 students, the average weight decreases by 4 kg, when a new student is joining the class. If the average weight of students is 64 kg. What is the weight of new student?a)90 kgb)96 kgc)110 kgd)85 kge)None of theseCorrect answer is option 'B'. Can you explain this answer? for Banking Exams 2025 is part of Banking Exams preparation. The Question and answers have been prepared according to the Banking Exams exam syllabus. Information about In a class there is 39 students, the average weight decreases by 4 kg, when a new student is joining the class. If the average weight of students is 64 kg. What is the weight of new student?a)90 kgb)96 kgc)110 kgd)85 kge)None of theseCorrect answer is option 'B'. Can you explain this answer? covers all topics & solutions for Banking Exams 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for In a class there is 39 students, the average weight decreases by 4 kg, when a new student is joining the class. If the average weight of students is 64 kg. What is the weight of new student?a)90 kgb)96 kgc)110 kgd)85 kge)None of theseCorrect answer is option 'B'. Can you explain this answer?.
Solutions for In a class there is 39 students, the average weight decreases by 4 kg, when a new student is joining the class. If the average weight of students is 64 kg. What is the weight of new student?a)90 kgb)96 kgc)110 kgd)85 kge)None of theseCorrect answer is option 'B'. Can you explain this answer? in English & in Hindi are available as part of our courses for Banking Exams. Download more important topics, notes, lectures and mock test series for Banking Exams Exam by signing up for free.
Here you can find the meaning of In a class there is 39 students, the average weight decreases by 4 kg, when a new student is joining the class. If the average weight of students is 64 kg. What is the weight of new student?a)90 kgb)96 kgc)110 kgd)85 kge)None of theseCorrect answer is option 'B'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of In a class there is 39 students, the average weight decreases by 4 kg, when a new student is joining the class. If the average weight of students is 64 kg. What is the weight of new student?a)90 kgb)96 kgc)110 kgd)85 kge)None of theseCorrect answer is option 'B'. Can you explain this answer?, a detailed solution for In a class there is 39 students, the average weight decreases by 4 kg, when a new student is joining the class. If the average weight of students is 64 kg. What is the weight of new student?a)90 kgb)96 kgc)110 kgd)85 kge)None of theseCorrect answer is option 'B'. Can you explain this answer? has been provided alongside types of In a class there is 39 students, the average weight decreases by 4 kg, when a new student is joining the class. If the average weight of students is 64 kg. What is the weight of new student?a)90 kgb)96 kgc)110 kgd)85 kge)None of theseCorrect answer is option 'B'. Can you explain this answer? theory, EduRev gives you an ample number of questions to practice In a class there is 39 students, the average weight decreases by 4 kg, when a new student is joining the class. If the average weight of students is 64 kg. What is the weight of new student?a)90 kgb)96 kgc)110 kgd)85 kge)None of theseCorrect answer is option 'B'. Can you explain this answer? tests, examples and also practice Banking Exams tests.
Explore Courses for Banking Exams exam

Top Courses for Banking Exams

Explore Courses
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