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The average weight of a group of 15 persons increases by 2 kg when a person weighing 40 kg is replaced by Saurabh. What is the weight of Saurabh?
- a)75 kg
- b)72 kg
- c)70 kg
- d)64 kg
Correct answer is option 'C'. Can you explain this answer?
Verified Answer
The average weight of a group of 15 persons increases by 2 kg when a p...
Combined weight of the group increases by = 2 × 15 = 30 kg
So the answer = 40 + 30 = 70 kg
Hence, Option C is correct.
So the answer = 40 + 30 = 70 kg
Hence, Option C is correct.
Most Upvoted Answer
The average weight of a group of 15 persons increases by 2 kg when a p...
`Understanding the Problem:`
- The average weight of a group of 15 persons increases by 2 kg when a person weighing 40 kg is replaced by Saurabh.
- We need to find the weight of Saurabh.
`Solution:`
- Let the weight of Saurabh be x kg.
- According to the given information, the total increase in weight = 15 * 2 = 30 kg.
- Initially, the total weight of the group excluding Saurabh = 15 * average weight = 15 * (total weight/15) = total weight.
- After Saurabh replaces the person weighing 40 kg, the total weight of the group = total weight + 30 kg.
- Total weight after Saurabh replaces the person = total weight - 40 kg + x kg.
- Given that the average weight of the group increases by 2 kg, we have:
- (total weight - 40 + x) / 15 = (total weight / 15) + 2.
- Simplifying the equation, we get:
- total weight - 40 + x = total weight + 30.
- x = 30 + 40 = 70 kg.
Therefore, the weight of Saurabh is 70 kg. So, option C is the correct answer.
- The average weight of a group of 15 persons increases by 2 kg when a person weighing 40 kg is replaced by Saurabh.
- We need to find the weight of Saurabh.
`Solution:`
- Let the weight of Saurabh be x kg.
- According to the given information, the total increase in weight = 15 * 2 = 30 kg.
- Initially, the total weight of the group excluding Saurabh = 15 * average weight = 15 * (total weight/15) = total weight.
- After Saurabh replaces the person weighing 40 kg, the total weight of the group = total weight + 30 kg.
- Total weight after Saurabh replaces the person = total weight - 40 kg + x kg.
- Given that the average weight of the group increases by 2 kg, we have:
- (total weight - 40 + x) / 15 = (total weight / 15) + 2.
- Simplifying the equation, we get:
- total weight - 40 + x = total weight + 30.
- x = 30 + 40 = 70 kg.
Therefore, the weight of Saurabh is 70 kg. So, option C is the correct answer.
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The average weight of a group of 15 persons increases by 2 kg when a person weighing 40 kg is replaced by Saurabh. What is the weight of Saurabh?a)75 kgb)72 kgc)70 kgd)64 kgCorrect answer is option 'C'. Can you explain this answer?
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The average weight of a group of 15 persons increases by 2 kg when a person weighing 40 kg is replaced by Saurabh. What is the weight of Saurabh?a)75 kgb)72 kgc)70 kgd)64 kgCorrect answer is option 'C'. Can you explain this answer? for SSC CHSL 2025 is part of SSC CHSL preparation. The Question and answers have been prepared according to the SSC CHSL exam syllabus. Information about The average weight of a group of 15 persons increases by 2 kg when a person weighing 40 kg is replaced by Saurabh. What is the weight of Saurabh?a)75 kgb)72 kgc)70 kgd)64 kgCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for SSC CHSL 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for The average weight of a group of 15 persons increases by 2 kg when a person weighing 40 kg is replaced by Saurabh. What is the weight of Saurabh?a)75 kgb)72 kgc)70 kgd)64 kgCorrect answer is option 'C'. Can you explain this answer?.
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Solutions for The average weight of a group of 15 persons increases by 2 kg when a person weighing 40 kg is replaced by Saurabh. What is the weight of Saurabh?a)75 kgb)72 kgc)70 kgd)64 kgCorrect answer is option 'C'. Can you explain this answer? in English & in Hindi are available as part of our courses for SSC CHSL.
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