average of three number is 12 if two number are 8 and 15 then the third number is ?
(8+15+x)/3 = 12
now just find x
13
It's 13 because first do twelve times three which is thirty six.
eighteen plus five is twenty three.
thirty six takeaway twenty three equals thirteen
which is tour answer hope that his helped
love sofka
To find the third number, we can use the concept of averaging.
We know that the average of three numbers is 12, and two of the numbers are already given as 8 and 15. Let's denote the third number as "x".
To find the average, we add up all the numbers and divide by the total count. In this case, we can represent it as:
(8 + 15 + x) / 3 = 12
To solve the equation for "x", we need to isolate it by multiplying both sides of the equation by 3:
8 + 15 + x = 3 * 12
Simplifying the right side of the equation:
8 + 15 + x = 36
Combine like terms on the left side:
23 + x = 36
Next, we isolate "x" by subtracting 23 from both sides:
23 + x - 23 = 36 - 23
x = 13
Therefore, the third number is 13.