Question

if the mean of 16, 14, x, 23, 20 is 18 , find the value of x

Answer 1

Here is the answer...

Mean = $\frac{sum \: of \: the \: numbers}{total \: numbers}$

$\therefore \frac{16 + 14 + x + 23 + 20}{5} = 18$

$\frac {73 + x}{5} = 18 \\ 73 + x = 90 \\ \textbf{x = {90} - {73} }$

$\textbf{x \: = \: 17}$

Hence , the value of x is 17.

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