Question

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

Answer 1

x = 31/3 or 10 1/3 or 10.33

Explanation:

(6 + 8 + x + 2 + 10 + 2x - 1 + 2) / 6 = 9

(2x + x + 23) / 6 = 9

3x + 23 = 54

3x = 31

x = 31/3