If the mean of 9, 12, x, 4 and 23 is 12, then find the value of x

Sure, here is the step by step solution:

Step 1: Understand the problem The mean is the average of a set of numbers. It is calculated by adding all the numbers in the set and then dividing by the count of numbers. In this case, we are given that the mean of 9, 12, x, 4 and 23 is 12. We are asked to find the value of x.

Step 2: Set up the equation The mean is calculated as (sum of all numbers) / (count of numbers) = mean So, we can set up the equation as follows: (9 + 12 + x + 4 + 23) / 5 = 12

Step 3: Simplify the equation First, add the known numbers: (48 + x) / 5 = 12

Then,