Question

The average of 8,6,9,12 and 4x is x. What is the value of x

Answer 1

Answer:

35

Step-by-step explanation:

The average of 8,6,9,12 and 4x is x

To get average add all the numbers given in data set and divide by 5 because we have 5 numbers in data set

Average =$\frac{8+6+9+12+4x}{5}$

Given that average is x. So we replace x for average

$x=\frac{8+6+9+12+4x}{5}$

Multiply both sides by 5

$5x= 8+6+9+12+4x$

Subtract 4x from both sides

$x= 8+6+9+12$

$x=35$

So the value of x is 35

Answer 2

8 + 6 + 9 + 12 + 4x / 5  =  x                      Original Problem.
25 + 4x / 5 = x                                         Addition.
25 + 4x = 5x                                            Multiply each side by 5.
25 = x                                                      Subtract 4x from each side.
x = 25                                                      Switch equation around.

Answer: x = 25