The mean of 1, 3, 5, 7 and x is 4. Find the value of x
Answer Details
To find the value of x, we need to use the given information that the mean of 1, 3, 5, 7, and x is 4.
The mean of a set of numbers is found by adding up all the numbers in the set and then dividing by the total number of numbers. So, we can write an equation:
(1 + 3 + 5 + 7 + x) / 5 = 4
To solve for x, we can first simplify the equation by multiplying both sides by 5:
1 + 3 + 5 + 7 + x = 20
Then, we can solve for x by subtracting the sum of the known numbers from both sides:
x = 20 - (1 + 3 + 5 + 7)
x = 20 - 16
x = 4
Therefore, the value of x is 4.