96 views
0 votes
0 votes
CAT 2023 Set-3 | Quantitative Aptitude | Question-12

Q. 12)

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

Please log in or register to answer this question.

Related questions

0 votes
0 votes
0 answers
2
admin asked Mar 31
87 views
If $x$ is a positive real number such that $x^{8}+\left(\frac{1}{x}\right)^{8}=47$, then the value of $x^{9}+\left(\frac{1}{x}\right)^{9}$ is$34 \sqrt{5}$$40 \sqrt{5}$$36...
0 votes
0 votes
0 answers
3
admin asked Mar 31
89 views
Let $n$ and $m$ be two positive integers such that there are exactly $41$ integers greater than $8^{m}$ and less than $8^{n}$, which can be expressed as powers of $2$. Th...
0 votes
0 votes
0 answers
4
admin asked Mar 31
78 views
Q. 3)For some real numbers $a$ and $b$, the system of equations $x+y=4$ and $(a+5) x+\left(b^{2}-15\right) y=8 b$ has infinitely many solutions for $x$ and $y$. Then, the...
0 votes
0 votes
0 answers
5
admin asked Mar 31
68 views
Q. 4)For a real number $x$, if $\frac{1}{2}, \frac{\log _{3}\left(2^{x}-9\right)}{\log _{3} 4}$, and $\frac{\log _{5}\left(2^{x}+\frac{17}{2}\right)}{\log _{5} 4}$ are in...