Question

If the mean of $6,8,5,x$ and $4$ is $7$, then the value of $x$ is ______.

• A. $11$
• B. $12$
• C. $13$
• D. $14$

Answer 1

The correct option is B $12$

Given, mean $=7$ and data is $6,8,5,x,4$

Therefore, $\frac{6+8+5+x+4}{5}$ $=7$
$\Rightarrow$ $x+23=35$
$\Rightarrow$ $x=12$