The mean of 2,7,6 and x is 5 and the mean of 18,1,6,x and y is 10 What is the value of y

Options

A. 5
B. 10
C. 20
D. 30

Explanation

To find the value of \( y \) given the conditions of the problem, we will follow these steps:

### Step 1: Calculate \( x \) using the first mean condition
The mean of the numbers \( 2, 7, 6, \) and \( x \) is given as \( 5 \).

The formula for the mean is:
\[
\text{Mean} = \frac{\text{Sum of observations}}{\text{Number of observations}}
...