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The average weight of 3 men A,B and C is 85 kg another man D joins the group and the average now become 81 kg. If another man E whose weight is 4 kg more than that of D, replaces A then the average weight of B, C, D and E becomes 80 kg. What is the weight of A? 
  • a)
    77 kg 
  • b)
    78 kg 
  • c)
    75 kg 
  • d)
    74 kg 
Correct answer is option 'A'. Can you explain this answer?
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The average weight of 3 men A,B and C is 85 kg another man D joins the...
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The average weight of 3 men A,B and C is 85 kg another man D joins the...
Given:
The average weight of 3 men A, B, and C is 85 kg.
After man D joins the group, the average weight becomes 81 kg.
Man E, whose weight is 4 kg more than that of D, replaces A.
The average weight of B, C, D, and E becomes 80 kg.

Let's solve the problem step by step:

Finding the total weight:
Let the weights of A, B, and C be a, b, and c, respectively.
The total weight of A, B, and C = 3 * 85 = 255 kg.

Calculating the weight of D:
After man D joins the group, the average weight becomes 81 kg.
The total weight of A, B, C, and D = 4 * 81 = 324 kg.

Therefore, the weight of D = Total weight of A, B, C, and D - Total weight of A, B, and C = 324 - 255 = 69 kg.

Calculating the weight of E:
The weight of E = Weight of D + 4 = 69 + 4 = 73 kg.

Finding the total weight of B, C, D, and E:
The average weight of B, C, D, and E = 80 kg.
The total weight of B, C, D, and E = 4 * 80 = 320 kg.

Finding the weight of A:
The total weight of B, C, D, and E = Total weight of A, B, C, and D - Weight of A + Weight of E
320 = 324 - Weight of A + 73
-4 = -Weight of A
Weight of A = 4 kg

Therefore, the weight of A is 77 kg.
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The average weight of 3 men A,B and C is 85 kg another man D joins the group and the average now become 81 kg. If another man E whose weight is 4 kg more than that of D, replaces A then the average weight of B, C, D and E becomes 80 kg. What is the weight of A?a)77 kgb)78 kgc)75 kgd)74 kgCorrect answer is option 'A'. Can you explain this answer?
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The average weight of 3 men A,B and C is 85 kg another man D joins the group and the average now become 81 kg. If another man E whose weight is 4 kg more than that of D, replaces A then the average weight of B, C, D and E becomes 80 kg. What is the weight of A?a)77 kgb)78 kgc)75 kgd)74 kgCorrect answer is option 'A'. Can you explain this answer? for Defence 2024 is part of Defence preparation. The Question and answers have been prepared according to the Defence exam syllabus. Information about The average weight of 3 men A,B and C is 85 kg another man D joins the group and the average now become 81 kg. If another man E whose weight is 4 kg more than that of D, replaces A then the average weight of B, C, D and E becomes 80 kg. What is the weight of A?a)77 kgb)78 kgc)75 kgd)74 kgCorrect answer is option 'A'. Can you explain this answer? covers all topics & solutions for Defence 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for The average weight of 3 men A,B and C is 85 kg another man D joins the group and the average now become 81 kg. If another man E whose weight is 4 kg more than that of D, replaces A then the average weight of B, C, D and E becomes 80 kg. What is the weight of A?a)77 kgb)78 kgc)75 kgd)74 kgCorrect answer is option 'A'. Can you explain this answer?.
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