The average weight of first 11 persons among 12 persons is…

Are you looking for correct answer of The average weight of first 11 persons among 12 persons is…? Here we have shared detailed answer with explanations.

The average weight of first 11 persons among 12 persons is 95 kg. The weight of 12th person is 33 kg more than the average weight of all the 12 persons. The weight of the 12th person is :

  1. A. 128.75
  2. B. 131
  3. C. 128
  4. D. 97.45

Answer: Option B

Here is complete explanation of The average weight of first 11 persons among 12 persons is….

Solution(By ExamCraze Team)

Let the average weight of 12 person is = x and weight of 12 persons
According to the question,
$$eqalign{ & Rightarrow frac{{11 times 95 + x + 33}}{{12}} = x cr & Rightarrow 1045 + x + 33 = 12x cr & Rightarrow 11x = 1078 cr & Rightarrow x = 98 cr} $$
∴ The weight of 12th person is = 98 + 33 = 131 kg

Leave a Comment