Question

9. The average of three numbers is 11x. One number is
3x and the other number is 9. What will be the third
number in terms of x?​

Answer 1

X=1

Step-by-step explanation:

11x=3x+9

11x-3x=9

9x=9

X=9/9

X=1

Answer 2

The third number is 3(10x-3).

Given data :

Average of three numbers = 11x

First and second numbers are = 3x,9

Let,the third number = y

So,

The sum of the three numbers = (average× number of units) = (11x × 3) = 33x

So,

3x+9+y = 33x

y = 33x-3x-9

y = 30x-9

y = 3(10x-3) (answer)