Question:
Find the mean of x, x + 2, x + 4, x + 6, x + 8.
Solution:
Numbers are x, x + 2, x + 4, x + 6, x + 8.
$\therefore$ Mean $=\frac{\text { Sum of numbers }}{\text { Total numbers }}$
$=\frac{x+x+2+x+4+x+6+x+8}{5}$
$=\frac{5 x+20}{5}$
$=5\left(\frac{x+4}{5}\right)$
= x + 4
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