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CAT 2023 Set-3 | Quantitative Aptitude | Question: 12

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There are three persons $A, B$ and $C$ in a room. If a person $D$ joins the room, the average weight of the persons in the room reduces by $x \mathrm{~kg}$. Instead of $\mathrm{D}$, if person $\mathrm{E}$ joins the room, the average weight of the persons in the room increases by $2 x \mathrm{~kg}$. If the weight of $\mathrm{E}$ is $12 \mathrm{~kg}$ more than that of $\mathrm{D}$, then the value of $x$ is

  1. $1.5$
  2. $0.5$
  3. $1$
  4. $2$

     

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