The mean of 6, 8, x+2, 10, 2x-1 and 2 is 9. Find the value of x.

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Solution

The correct option is B
40

$\frac{6 + x + 2 + 10 + 2 x - 1 + 8 + 2}{6}$ = 9

$\frac{27 + 3 x}{6} = 9$
27+3x = 54
x = 9

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