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Average weight of 25 persons is increased by 1 kg when one person weighing 60 kg is replaced by a new person. Weight of new the person is-

A. 50 kg B. 61 kg C. 86 kg D. 85 kg Answer: Option D
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Solution(By Apex Team)

Let the weight of 25 person's = 25x kg And the new person's weight = y kg According to the question, $\begin{array}{l}\text{⇒ 25x – 60 + y = 25 (x +1)}\\ \text{⇒ 25x – 60 + y = 25x + 25}\\ \text{⇒ y = 85 kg}\end{array}$

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